Mercurial Morata can unlock full force of Conte's cavaliers, says Chelsea hero Zola

Alvaro Morata has been told his form in front of goal is crucial to helping to unlock the incredible talent of Chelsea stars such as Eden Hazard.

Morata, who switched to the Blues from Real Madrid in the summer in a deal that could rise to £70million, has hit three goals in his first four Premier League games.

Yet critics have questioned whether the attacker has the capabilities to fill the void that currently exists due to the situation regarding stayaway striker Diego Costa.

And former Stamford Bridge favourite Gianfranco Zola says if ex-Juventus hitman Morata can rise to the challenge of leading the line for Antonio Conte’s side, he will bring out the best in his team-mates.

Zola, who scored 80 goals in 312 appearances for the Blues, said: “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.

“I know he is a very talented player with amazing skills, but he has never been a regular. 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.”

Meanwhile, Zola says his former club will miss Costa, currently refusing to return to the Londoners after a fall-out with Conte. He added: “Nobody doubts the quality and value of the player but something must have gone wrong in the changing room.

“A manager who is day in, day out in the changing room knows how important a player is, not only on the pitch but also within the group, so if Conte has come to this decision it means probably there were no guarantees any more to have that harmony in the changing room.

“It is big loss for the club because we know how important a player like Diego can be but you have to pay respect to the manager, who has to look after 24 players, not only one.”