United have seen their lead being whittled down to just one point following back-to-back defeats by Liverpool and Fulham.
“We would have liked another game straight away to respond to a couple of difficult games, which are hopefully just a setback,” said Fletcher on Sky Sports News.
“It’s easy to talk about it, but you’ve got to go out on to the pitch and prove it is only a setback.
“We would have been desperate for another league game, but unfortunately the internationals have come about.
“Liverpool would have been wanting the league to continue really and not wanting the international break, so you never know, it might be something that we just have to deal with.
“I’m sure we’ll be back to winning ways, we’ve got to be.”
He added: “It’s easy for me to say it’s only a blip, but we’ve got to go out on to the park and show it’s only a blip.
“I think it’s easy talking about it, it’s hard to go and do it. We’ll all be desperate to go out and show when we get back that it is only a blip.
“As I say, it’s easier talking than it is to go and produce results.”
