Mario said sorry and he would learn and not make the same mistake again.
If City are to mount another sustained and serious challange for the title next season, it won't happen if Mario stays.
'The tackle was poor and I'm very sorry to my team-mates that I got sent off so early in such an important game.
'It was not a good way to repay the manager who has shown so much faith in me or the owners and fans who have made me so welcome since I arrived from Italy.'
If City are to mount another sustained and serious challange for the title next season, it won't happen if Mario stays.