[Chelsea and then] City we have a massive chance of winning the competition."
Monday's game against Chelsea comes less than 48 hours after both sides' Saturday league fixtures. As a result, van Persie warns fans shouldn't expect a classic encounter.
"It's not ideal because it's only two days after the Sunderland game. It's a shame but we can't do anything about it. We just have to deal with it.
"It's not ideal but we have to get the result. I think people have to realise not to expect a great game of football. That might not be possible. If it happens, great, but don't expect it - the games are too close to each other."