Discussed earlier on Talksport. The leak likely to be a disgruntled player not being selected. Or even one who was.

zahhhhaaaaa, sorry just sneezed.
According to Ray Parlour it happens all the time. Anyway was the team a surprise to us? The only issue was Noone on the bench but if he was already carrying a knock then that is about right. If it was no surprise to us then surely Palace would have prepared for a variety of selection options anyway. As far as I can see they selected the best 11 they had available.
Yet another example of City shouting their mouth off when a considered silence and possibly a diplomatic, sensitive approach to the powers that be would have been more appropriate.