The Scot has warned the Old Trafford boss not to complain about the state of the Prenton Park pitch ahead of the FA Cup tie
Tranmere Rovers manager Micky Mellon has warned Manchester United that they should not line up an excuse of their poor pitch should the visitors suffer a shock result in the FA Cup fourth round on Sunday.
The Merseyside club have already caused a stir in the competition this season by recovering from three goals down to force Watford to a replay, which they subsequently won 2-1 on Thursday.