The process is not going to be particularly quick, with City acutely aware of the importance of going through the appropriate channels to cover the club should the dispute develop into a legal battle. They are so determined to present a watertight case they intend to interview everyone who was in City's dugout when the controversy flared up.
Tevez may be required to attend a formal disciplinary hearing and will almost certainly be fined two weeks' wages, the maximum amount permitted. As the highest earner at the club and in the Premier League, that amounts to £500,000, the biggest fine ever meted out to a player in English football.
Tevez had issued a statement through his advisers earlier in the day apologising to the club's supporters but denying he had refused to play, blaming "confusion on the bench". However, that is undermined by his interview directly after the match, when he admitted going against his manager. His new version of events has been ridiculed behind the scenes at the Etihad Arena, where there is the sense of compelling evidence in Mancini's favour.
City have already compiled a dossier of Tevez's previous misdemeanours and are keeping all possibilities open as they contemplate what to do with a player who would ordinarily be valued as one of the club's main assets. The top-end option is to terminate his contract and launch legal action. High-level sources at the Premier League believe Tevez is "sackable" and Jim Boyce, the vice-president of Fifa, has said his organisation would then investigate imposing a worldwide ban on the Argentinian.
"If he has done what has been said, and it appears there is no doubt about it, I think his club would be better off with him not being part of it," Boyce said.
"If Manchester City prove it, write to Fifa and state the exact circumstances, I believe Fifa should have the power, as they do for drugs-related cases and other cases, to ban the player from taking an active part in football. I would have no problem with that whatsoever. It hasn't occurred before, but I think what happened [with Tevez] was despicable."
Mancini spent a long part of the day discussing the matter with Mubarak and asked for a suspension to be invoked that would mean Tevez was not allowed at the stadium or the training ground. The players were on a day off but report for duty on Thursday and Mancini has told Mubarak he will not accept Tevez being involved in first-team sessions.