Palace lose out on Andrew
Calvin Andrew will be out of the game for several months after injuring his knee while on loan at Brighton.
The Crystal Palace striker came on as a first-half substitute in Brightons final game of the season against Stockport County, but had to be replaced himself before the break after hurting his knee.
Warnock told the Croydon Guardian: 'It's quite a serious knee injury and he will be out for about six months,' said the Yorkshireman.
'I was going to call him back and use him against Sheffield United if he wasn't playing in their last game but they said he would.
'Then he wasn't in the starting line up which wasn't our agreement but came on anyway after 10 minutes.'