Warnock is a wily old fox, and I reckon he saw that a large TV audience at home would be watching City tonight following the WC escapades, including fellow pros / coaches etc who would all be going away thinking we're absolute crap.
Just when they're least suspecting it, he will then spring the 'Trojan Rabbit':
https://www.youtube.com/watch?v=tS_JBDRk8o0