Chelsea hero Mario Melchiot has warned Hakim Ziyech will have to adjust to the rigours of Premier League football.

Melchiot made the exact same switch back in 1999 and has provided some words of caution for the Morocco international.

"Tactically you learn a lot in Holland but I think character-wise Ziyech will learn a lot when he comes to England," Melchiot told 888Sport.

"But I don't worry about him or his character because he already had to survive by himself to get where he is today.

"He went to Ajax and had to stand his ground there to make it. He managed to win over everybody and they saw a footballer that was from a different planet and they had to give him credit."

"If he gets into Frank's team and plays the games I expect him to then I don't see any problems because he has the ability.

"The only worry is that with English teams the games come back-to-back and you need the right character because this is another level.

"Frank will have looked at a few players and wondered if they can handle this. Ziyech can."