Crystal Palace boss Tony Pulis is reluctant to talk up their chances of an upset against Manchester United.
Pulis refused to talk up his chances of taking their scalp for the first time with his side still ranked as the division's lowest scorers with just 18 goals so far.
"They are a great football club and I have tremendous respect for them and David (Moyes)," he said.
"I watched their last three games and you can't believe some of the things that happened in those matches to stop them from winning.
"You just hope their luck doesn't turn against us."
