The Brazil-born Spanish international striker has netted nine goals in just eight Premier League games this season, sending Chelsea to the summit of the table and creating hope that the Blues may finally reclaim the league title.
Costa was a key part of the Atletico Madrid side which reached the Champions League last final last season, along with fellow Chelsea new-boys Thibaut Courtois - who is back at Stamford Bridge after three-years away on loan - and left-back Filipe Luis, who has struggled to make the same sort of impact as Costa has following his move from the Spanish capital.
Having arrived from La Liga champions Atletico, there were fears that the 26-year-old would be unable to adapt to the English game, but, with the creative help of Cesc Fabregas and Eden Hazard, Costa has allayed any fears surrounding his career in West London, and it appears as if Chelsea finally own a striker to fill the void left by Didier Drogba - allowing Blues fans to forget the memory of Fernando Torres.
One man who didn’t fear Costa’s impact in West London was goalkeeper Courtois, who, having spent almost three complete seasons with the forward, believed that the Spanish international’s qualities meant that he would adapt to the Premier League straight away.
Speaking to the Standard, Courtois said: “I knew his qualities and that he could do it for Chelsea. The only question was whether he could adjust to the way of defending in the Premier League but he is liking it.
“Last season he was the only striker for us at Atletico. He scored a lot of important goals and a lot of brilliant goals.
“Then Chelsea came for him and I heard people say he couldn’t do the same in England because maybe he’s just a striker that’s dominant for one year and he goes down. But you can already see the amount of goals he’s scored this season and I hope he can continue like that.”
Courtois also revealed how Costa has continued to perform at such an incredible level this season, claiming that he gets an adrenaline boost to raise his performance levels when fixtures come around.
“He has a way of getting an adrenaline inside of him to play well,” the Belgian stopper added.