City must bounce back in Saturday's eagerly-awaited Premier League crunch with leaders Chelsea, knowing the heat is starting to be applied to a squad that has been put together at a cost of over £200million.
"When you are at a club like Manchester City and you spend £200million on players you expect silverware," said Cox.
"Mancini has to deal with that and a lot of questions are going to be asked.
"This was a good opportunity for them. Their manager has stuck out a team he thought would win the game and they didn't, so he could be under a bit of pressure."