The 29-year-old joined Celtic from Aston Villa in 2016 and has gone on to make 95 appearances in all competitions, scoring and creating 68 goals.
Sinclair helped the Bhoys win the domestic treble in his debut season (Scottish Premiership, Scottish Cup and Scottish League Cup) and says he wants to win more at Parkhead.
The Great Britain international’s form for Celtic has led to Premier League interest, but the ex-Chelsea man is committing to staying in Scotland and helping them pick up even more silverware.
“It was just speculation and maybe because I didn’t play in the last couple of games – but I love this club and I love being here.
“This is why I chose to play for Celtic. I’m happy and enjoying my football. There’s always going to be speculation but I need to put my head down and get back to the form that I showed the fans last year.
“I have been to so many clubs and this is where I’ve been at my happiest. Leaving here would be out the question. I want to be here for 10-in-a-row.”
Sinclair has scored and created 17 goals in 27 league games this season, but hasn’t netted since January. He was an unused substitute in the Old Firm Derby against Rangers last month and benched against Motherwell a week later, but the Englishman is adamant he’s “in a happy place”.
“The missus is settled and loves it up here – she loves the city and everything about it. We have another little one on the way as well. I’m in a happy place right now.
“My confidence is still up there. I’m still confident I can score goals and play well but it’s just putting that on to the pitch and giving the fans something to cheer about.
“I set my standards so high, winning Player of the Year and as a team we won an Invincible Treble, so it was an unbelievable year and those are the standards everyone expects now. That’s fair enough and it’s about proving that, keeping your confidence up, which it is, and going out and performing.”