Arsenal boss Arsene Wenger says he was impressed by how quickly Diego Costa adapted to the English Premier League
The Chelsea striker has been in sublime form for the Blues as the Frenchman hopes to see the 25-year-old "dis-adapt" when the two teams clash on Sunday afternoon.
"I've never seen a player adapt as quickly as he [Diego Costa] has," Wenger said on Friday.
"He has done fantastically well. He has all the aspects of a striker that you like. He's focused, always determined, ready for a fight and I'm very impressed.
"He has got players who can feed him like Cesc Fabregas and Eden Hazard, who can find him with final passes.
"He's a very efficient player. The timing of his runs and his determination, his killing determination - you feel he's a killer. He has that in him.
"I just hope he can dis-adapt on Sunday!"