Manchester United manager Louis van Gaal believes that his team are in danger of getting knocked out of the FA Cup by Cambridge United.
The Red Devils reside 76 places above the League Two side, but Van Gaal is wary of cup upsets ahead of United's trip to Abbey Stadium on Friday.
"It's always tough to play, in the mind at least, a weaker team, because in the players' minds it's a weaker team," Van Gaal told reporters.
"That shall always happen in the FA Cup. There are always surprises, and I hope we are not the surprise. When you see Cambridge and analyse them, they play very direct, with long balls, and have five or six players who are over 1.9m in height. So for us it will be difficult to defend."
United secured a 2-0 victory over Yeovil Town to reach the fourth round of the tournament.
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