We take a look at the most regrettable recent transfer from the Premier League top six clubs which in one or the has been affecting each side.

Manchester United

United’s manager Jose Mourinho has said that his side made a big mistake for selling Angel Di Maria, Danny Welbeck and Javier Hernandez prior to his arrival as the Red Devils manager this summer.

Di Maria who now played for Paris Saint-Germain played under the Portuguese manager doing his reign with Real Madrid while the Mexican poacher is one kind of player that possesses exactly the sort of penalty area impact the club have lacked this season, coming bottom of the table for big opportunities converted.

The Argentine international was a key player for Mourinho at Santiago Bernabeu.

England international Danny Welbeck was well-regarded for his superb ability to play tactically hard roles out wide and through the middle for Sir Alex Ferguson, especially in tough games in Europe, and given the former Chelsea boss inclusion of Juan Mata and Jesse Lingard in his starting lineup, Welbeck would have a useful asset to have around.

However, the Red Devil’s are not the only Premier League club with regrets in the transfer window. Other clubs that look to have cost the other members of the top six dearly are mentioned below:

Chelsea

Kevin De Bruyne

After having football career questioned by Mourinho, the Belgian international seek a move to Wolfsburg where he proved to be one of the finest playmakers in Europe.

He secure the move to Manchester City in 2015 and has become a backbone for Pep Guardiola playing as a “free eight” the combination role between being City’s No. 10 and a traditional No. 8 in midfield, and leads the line for the most successful through balls in the Premier League this season.

De Bruyne has also created the most chances per 90 minutes when it comes to regular, first-team starter to have registered at least 1,000 minutes of topflight football.

Mohamed Salah

Salah was only able to record 19 appearances for the Blues after moving to Stamford Bridge in January 2014, and while he may not have fit into Mourinho’s starting lineup, since the arrival of Antonio Conte and his 3-4-2-1 system, the part he could have played for the Blues is now clear.

Salah has been involved in 0.72 goals per game for Serie A giants AS Roma this season as a provider or a scorer compared with 0.58 for Pedro, who has overtaken Willian in the Italian’s plans for the first team.

Romelu Lukaku

If Chelsea are willing to bring back the Belgian to Stamford Bridge this summer, with his future at Everton now surrounded with doubts, they will have to stump up some serious cash to reverse the move that sent Lukaku to Goodison Park permanently in 2014 after spending a year on loan with the Toffees.

Lukaku, a mobile, ever-changing striker is tied with Tottenham’s Harry Kane as the leading scorer in the Premier League at present with 19 goals so far this season. Chelsea can easily lure him back give Roman Abramovich’s backing but there are still some who regret the forward was shown the exit door in the first place.

Arsenal

Serge Gnabry

In a struggling to perform German side Werder Bremen, Serge Gnabry has led the Bundesliga giants for goals and rank second in the squad rankings for chances in the Bundesliga this campaign. Given the huge impressive performances Alex Iwobi has had for the Emirates club, Arsene Wenger ought to have given the German more chances to perform in his team.

Robin van Persie

The Gunners answer to Liverpool and Suarez but with no love lost, Van Persie tarnished his images at the Emirates. His absence was felt in all occasion until 2014 summer acquisition of Chile international striker Alexis Sanchez who signed for Arsenal from Barcelona on a long-term contract for a fee in the region of £35m has moved forward to take on the Dutchman mantle as a more technically brilliant and fan favourtie.

Sanchez is a complete centre-forward that filled the void left by Van Persie in 2012.

He remains the ideal player to lead the line in Wenger’s preferred system, and who knows – had he not had to suffer under David Moyes’ more basic training regime, maybe he’d still be a top level player?

Cesc Fabregas

A big blow to the Gunner fans. Cesc Fabregas is another old favourite with so much hype he has long since become an enemy for many, yet we have to consider this: his defection to Barcelona may not would have the Gunners lost their ground, Chelsea may not have won the Premier League in 2015.

Arsenal boss may have dismissed the idea of resigning him ahead of the Blues due to Mesut Ozil being Arsenal’s primary playmaker but given the importance of having a secondary creator in the team, such as Santi Cazorla, that decision now looks to be an opportunity lost.

Tottenham Hotspur

Nacer Chadli

Now playing at West Brom, Chadli was never going to make it to first choice at White Hart Lane but provided a useful contrast to Mauricio Pochettino’s other option in attack and out wide at times.
Chadli has already bagged five goals and four assists in 22 appearances for the Baggies, totaling 57% of his attempted takes on and putting in 47 tackles to help the cause.

Iago Falque

Barcelona, Real Madrid and Juventus were the list of clubs that the Spaniard cam through as a youngster that ought to have set him on a path to stardom. I believe that’s what Spurs thought when he was signed to White Hart Lane in 2011, initially on loan, from the Old Lady.

However, while with Tottenham, he was down the pecking order and never made the breakthrough he thought he would in England. After series of loan moves, Falque is now thriving with Torino, having bagged 10 league goals for his side second only to Andrea Belloti. With Spurs struggling to make it to the top, who knows what he could have benefit and helped the team had he been around at a time Pochettino is in-charge?

Gylfi Sigurdsson

A season player contender now making the headlines at Swansea City, it would have probably never worked out for the Iceland international with Tottenham, where – like Chadli – he was always utilized to play second fiddle rather than be the focal point of how his side played. Regardless, Sigurdsson remains a thoroughbred match-winner has been involved in 18 league goals this season.

Manchester City

Denis Suarez

Now regarded as Andres Iniesta successor at Barcelona, the 23-year-old was originally meant to be one of the ready-made playmaker for Pep Guardiola’s emergence at Manchester City, signed well in advance of the Catalan’s arrival from the Celta Vigo academy in 2011.

However, he couldn’t made his way through in Manchester, and scouted by Barcelona B, he was hijack by Barca, only to sold him on to Villarreal in 2015 and purchased him back a year later.

Suarez has registered fourth most appearances for the La Liga champions first team in the league this season.

Stefan Savic

Sold off as one of many young central defenders regarded not to be good enough for City, he has showed Diego Simeone side enough talent in the Montenegrin to trust him to hel hold Atletico Madrid’s back line together. Only Nicolas Otamendi has averaged Savic more defensive actions per game in league matches this season, while he is yet to make a defensive error for the La Liga giants.

Edin Dzeko

Dzeko is currently ranks as the joint top scorer in Serie A, the Bosnian forward may not be the ideal Guardiola-type striker but his link up play and ability to create moves with his midfield teammates was underrated at Etihad, and he could have provided a technically-sound option in attack for the former Barcelona manager, if only off the bench.

Liverpool

Raheem Sterling

Hated and underrated for the manner in which he left Liverpool, there has still been plenty of chin-biting over what he could add to Reds squad had it been the Englishman stayed with the Anfield giants to work under Jurgen Klopp, whose own record at bringing up young talent on at Borussia Dortmund was brilliant.

With six goals and five assists to his name in the league, undeniably, Sterling would have been the real game changer for Liverpool.

Javier Mascherano

Yet to be properly replaced, Liverpool still look short of a destructive player in midfield to shield their occasionally wonky defence and stop opponents from playing. He has been turned into a centre-back for Barcelona, although he still lines up in front of the back line for his country.

The Reds still have not found someone capable yet to replace him, Liverpool still look of a destructive player in midfield to shield their occasionally leaking defence and stop opponent from penetrating. Mascherano has been converted into a centre-back for Barcelona, although he still lines up in front of the back line for Spain.

Luis Suarez

An extremely important name to bring up whenever discussing costly club departures, Suarez is also a player that few Liverpool fans wanted to see go when he was sold to Barcelona in 2014, despite growing list of controversies, the hard-working Uruguayan would have been perfect to work under Klopp tutelage.

The Uruguayan has the work rate of a player in the form of Roberto Firmino, the finishing of Daniel Sturridge and the game-changing, X-factor of Philippe Coutinho.