Rio Ferdinand believes Hakim Ziyech will prove to be Chelsea’s best signing of the summer after his impressive start for his new side.

Ziyech joined in the summer from Ajax, and injuries meant he had to wait until October 17 to make his Blues debut in the 3-3 draw with Southampton, but in the last three games the Morocco international has shown his immense quality.

Talking on his YouTube channel, Ferdinand said: “I think Ziyech, out of all of them, has been the one he’s wanted to bring back most because he brings you that little bit of difference. He brings you that little bit of guile. Havertz has got it, but Ziyech is a player.

“I saw him at Stamford Bridge last season destroy Chelsea. I saw in the Champions League many times last season. He’s the person who’s always looking for that little pass, that little bit of difference, he plays the hard pass, the risky pass that gets you the big reward.”

Dimitar Berbatov understands why Manchester United are being linked with Mauricio Pochettino given the team’s recent form.

But the former Red Devil thinks the club should focus on signing a defender rather than sacking Ole Gunnar Solskjaer.

He told Betfair: “If there’s truth to the Mauricio Pochettino rumours, it’s hard to blame United really.

“When the team plays bad, the buck stops with the boss, and this has always been true.

“I saw him recently as a guest commentator, and he said he is ready to work again, so it’s hard to stop those rumours.

“The one thing that won’t change, however, are the players. A new boss won’t change how they play.”

Berba then added: “”I still say United need a defender before they need a manager, a defender that is tactically aware.”