“I know he is a very talented player with amazing skills, but he has never been a regular,” Zola told talkSPORT.
“He played with Juventus and he wasn’t a regular, the same for Real Madrid. Nobody doubts his qualities but he is still young and needs to find consistency because when you play for teams like Juventus, Real Madrid and Chelsea you have to be consistent.
“Obviously Antonio Conte with his methods, his work ethic, he is helping him a lot and it seems he is going in the right direction. For Chelsea, the main striker is a vital position and if he plays well then Hazard, Pedro, Willian, all the players around him, will play well also.”