West Ham will complete the club record signing of Marko Arnautovic from Stoke City tomorrow after the Austrian forward passed his medical.

The Hammers have agreed to part with £23million for Arnautovic, a fee that surpasses the £20.5m they paid Swansea for Andre Ayew next season. The 28-year-Old Stoke man is expected to fly out with Slaven Bilic’s squad next week for their pre-season games in Germany.

He completed his medical in London on Friday with no issues raised and the Hammers are set to announce his arrival tomorrow to conclude an impressive week in the market for Bilic’s side.

West Ham begin their week with Joe Hart’s loan arrival to the club from Manchester City before Thursday saw an agreement between Bayern Leverkusen and West Ham for former Manchester United striker Javier Hernandez.

The Mexican forward and Hernandez are set to form a formidable attacking quartet rounded out by Manuel Lanzini and Michail Antonio, giving Bilic the pace and dynamism in attack he felt was lacking last season.

With Pablo Zabaleta having also arrived on a free transfer earlier in the window West Ham will feel that they have completed their most important business in the summer market, though with over a month until the window shuts the Hammers will remain open to making further additions.

Meanwhile Middlesbrough have agreed a deal for goalkeeper Darren Randolph, who had fallen down to third place in the pecking order, subject to medical and personal terms.

Irons boss Slaven Bilic has already brought goalkeeper Joe Hart to East London on loan, while the club also announced a deal for Javier Hernandez on Thursday.

Fans of the Hammers had been frustrated for so long this summer but it would appear as if Bilic is making good on his commitment to the supporters.

The addition of the Austrian forward with Andy Carroll and Javier Hernandez would give the Hammers a better chance in competiting in the top front.