Burnley manager Sean Dyche says Ole Gunnar Solskjaer has changed the mood at Manchester United.
The Red Devils are yet to lose since Solskjaer replaced Jose Mourinho, taking their streak to eight games with a win over Arsenal on Friday.
Burnley could be their ninth straight victim when the two teams meet on Tuesday. And speaking at his pre-match press conference, Dyche took some time to praise his counterpart.
He said: "It seems from the outside looking in, it seems like he has just tried to loosen it a little bit and put more freedom on it.
"A bit more energy seems to have come back to the players. I think that's a skill in itself. I think possibly that is what he has done; he has just given a different feel to the group in his own way.
"But I think they have responded and they are delivering good performances. It seems there is a little bit more spark, not massive tactical changes, but just that spark within the group.
"I am not questioning Jose Mourinho, I think he is an absolutely incredible and top manager. He's [OGS] changed that feeling in the group coming in and they have responded."