Well that's a bit of a non-story. At least it got that shitty Northern Irish team's name in the papers.
Even if Tevez did say no to warming up and not going on he's still fucked. You fucking do what you're fucking told by your fucking manager. If you think you've warmed up enough tough fucking shit. Go and warm up again.
If this had happened at Man Utd (which it wouldn't have) Tevez would have been sacked by now.