United have had a disappointing start to the season.
He told Sky Sports News: “They have not started too well but we have certainly not seen the last of United, that’s for sure.
“But if we can get another win at home against them then we can really push on.
“Liverpool have started well so we have to be careful of all teams. The top four have started well and we know that Man United will have a run later on in the season I’m sure.”
