David de Gea's errors this season have shown he was "lucky" to land a bumper Manchester United contract last year, says Jose Mourinho.
De Gea's blunders cost United an FA Cup final place d as Ole Gunnar Solskjaer's side were beaten 3-1 by Chelsea in Sunday's last-four clash.
The keeper's gaffes, which led to goals for Oliver Giroud and Mason Mount, were the latest in an error-strewn season from the once imperious Red Devils No1.
Last month, United legend Roy Keane said he would have been "swinging punches" at De Gea over the way he conceded against Tottenham's Steven Bergwijn, insisting he wouldn't have allowed the keeper to get on the team bus back to Manchester.
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