Sheffield United boss Chris Wilder has explained what Chelsea expect from loanee Ethan Ampadu.

Welshman Ampadu, 20, can play as a centre-back or in midfield.

And Wilder, talking about Ampadu and Serge Berge during the game against Liverpool, said: “I thought Ethan's performance was outstanding. I know the manager at Chelsea sees him as a sitting midfield player.

“He obviously played at right centre-half at Leipzig and in the middle of a back three as well in his time there, so they saw him in that position.

“But I thought both of them were outstanding last Saturday night [in midfield]. But mobility really is key. They've got to be able to handle the football, they've got to be able to tactically put themselves in good positions – which they both did for a young age.

“They're both learners, they're both very enthusiastic about learning, about getting better, they've got a huge appetite for that.

“But the game is moving on and it is a mobile game and players have to get about the park, and we've certainly got players that can do that and certainly those two possess those qualities."