United host Arsenal on Sunday.
"I said before, it will be interesting to see whether they can maintain that because over the last six or seven years they have faded off," he said.
"Certainly they seem in a better place. They seem stronger.
"We know we will have to be at our best to beat them but we are capable of that.
"I have always enjoyed my games against them and it has always been a big game. Hopefully we can get the right result on Sunday.
"It will be interesting to see what happens."
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