Manchester City boss Roberto Mancini is introducing a new discipline code to his squad after Carlos Tevez's Munich wobbler.

The People says once the investigation is complete into the incident at Bayern Munich - where Tevez apparently refused to go on as a second-half substitute - the club's Abu Dhabi paymasters will insist Blues boss Mancini ­tightens up discipline.

Mancini will be urged to crack down on any player who steps out of line after it emerged the club's owners were becoming concerned about shows of dissent and petulance from players BEFORE the Tevez incident in Munich last month, when City lost 2-0 in the Champions League.

Mancini is waiting until the outcome of the investigation ­before implementing a fresh code of ­conduct aimed at stamping out shows of indiscipline.