Chelsea ace Frank Lampard is impressed by David Luiz in midfield.

Lampard believes Luiz can be equally valuable to the team in midfield and in his usual position in defence.

"He has the ability to play either position and he's been a fantastic central defender," Lampard told the club's official website .

"People say that central midfield is also a role for him and I think they are right. You still have to have discipline and be in the right position, and you can't take liberties, and against Villa he showed he has the discipline and the ability to do that role."