Manchester United legend Rio Ferdinand has identified the weak point of Chelsea new signing, Romelu Lukaku.

Lukaku marked his Chelsea return with a dominant display in the 2-0 win against against Arsenal.

Aside netting the opening goal, the Belgian gave Arsenal defender Pablo Mari a torrid time in the game.

And looking ahead to next weekend’s clash with Liverpool, Ferdinand said on Vibe with FIVE:”I still think Lukaku’s hold-up play outside of the box sometimes leaves a bit to be desired.

“But when you play the ball into him in and around the box, my man’s touch is like glue.

“He bullies people, he was like a sixth former playing against first years, that’s what he made the Arsenal centre-backs look like, they didn’t know how to deal with him.

“[Pablo] Mari was an embarrassment, he didn’t know what to do.

“The way they defended against him… where’s Per Mertesacker or someone like that who’s in the building? Please tell them what to do.

“Before the game starts you tell them, ‘do not get into a physical battle with him, sometimes let him have a touch of the ball then you hit him, if you let him grip you he’s going to roll you and control the whole situation’.

“He could’ve scored three or four goals if the ball had bounced right.

“It’ll be interesting next week when we see him against [Virgil] Van Dijk, someone who can handle physically, someone who will match him set for step for pace, and who’s cute, who’s an intelligent defender.”