"We can only look after ourselves and we've been saying that for a while now," said the vice-captain.
"We're in great form and have to keep that going until the end of the season and see what happens.
"It's in United's hands, it's up to them to throw away. But Man City or Arsenal could do us a favour.
"Manchester City are in great form at the moment and Arsenal might have something to prove if they are knocked out of the Champions League, so they can definitely get something against United."