The French midfielder signed for Chelsea from champions Leicester for £30m over the summer and has proven to be a smash hit.
His tireless work rate enables Antonio Conte’s flashier players to do their thing further up the pitch.
“They’ve signed one the best players from last season”
And it’s clearly working as Chelsea have racked up maximum points from their last 11 games.
Sinclair told 5Live: “They’ve signed one the best players from last season and it’s kind of gone under the radar a little bit.
“I heard his former team-mate [Robert] Huth saying he was one of the best players in the Premier League in his opinion.
“He’s a five-foot dot guy, he covers every inch of grass.
“He’s very selfless in the way he plays and I just think Chelsea have slipped him in there in the middle of their midfield and he’s been so important.”