Former Liverpool goalkeeper David James admits he's a fan of Manchester United goalkeeper Sergio Romero.

Romero is expected to replace United No 1 David de Gea in goal for Sunday's clash against rivals Liverpool after the Spaniard picked up an injury while on international duty.

"I've analysed him and there are a few keepers who are highly-rated who just put the ball out there in a general area. But he's as good as Ederson and Alisson using his left foot and right foot," James told Goal.

"David de Gea is, of course, the No 1, but I looked at Romero when Manchester United bought him and I was amazed at how good the guy is with his feet – then I saw an improvement in De Gea.

"What you tend to find is when you've got two keepers or two players training with each other day in, day out, you start picking up positive habits from the other player."