Chelsea boss, Mauricio Pochettino, has issued stern warning to Nicolas Jackson.
Pochettino said the striker must adapt to the system of things in England with the striker just one game off suspension.
Jackson has received four yellow cards on separate occasions just for showing dissent.
In England match officials do not tolerate such behaviour and Pochettino, who is used to the system of things in the English top flight said the former Villarreal man must learn fast .
“Today we were talking about that as we had a meeting with him and also Enzo[Fernandez],” Pochettino told the press.
“A striker, four yellow cards only for talking with the referee. Not because of that, it is so cheap and it is going to bring a difficult situation to the team. He understood.
“Jackson is young, he is going to be a fantastic player. He needs to be calm and relaxed.
“We are talking about young players, you can blame me or blame us but they need time. There’s no doubt we have amazing talent but they need time.
“He needs to be clever and not protest to the referees. Maybe it’s because it’s his normal behaviour on the pitch, this season changed the rules, he came from Spain and it’s different and the change is more sensitive about this. It is about adapting.
“I hope on Sunday we are not talking about him being clever and first action he is getting a yellow card.”
