The only way I see Mancini being axed is if they don't win the Premier League this season and don't manage it next season either. Maybe if he wins the Premier League this season and doesn't next season, combined with a failure in the Champions League, than his head could be on the chopping block too.
Mourinho and Abramovich have allegedly patched up their issues a while ago, so I wouldn't rule it out. I'd prefer to see him go to Tottenham, because even though I'm an Arsenal fan, I'm fucking Australian and only consider our rivals as those competing for the same thing we are and not by who the closest club is to Arsenal in England. Right now I consider our main rivals to be Tottenham, Chelsea, Newcastle and Liverpool as they're competing for 3rd & 4th against us.
Apparently AVB left the Chelsea training ground in tears after his sacking because none or hardly any of the players went up to him to say goodbye. I honestly feel sorry for the guy even if I thought the writing was on the wall. I truly hope he pops up somewhere and makes waves with whatever team he manages next.