Balotelli has been involved in a number of well-documented incidents and controversies both on and off the pitch since joining City from Inter Milan in 2010. The Italian has been involved in bust-ups with team-mates, threw a dart at a City youth team player and set off a firework in his own bathroom.
Asked about what kind of role model the 22-year-old Balotelli represents, chief football operations officer Marwood, quoted by several newspapers, said: "I think that it's important to make a good example.
"I think - and we all know who we are talking about - that you will get people within the system who do not show the right values and the right behaviour."
He added: "In the main, we have a fantastic group of players here.
"I look at Pablo Zabaleta, Vincent Kompany, Joe Hart, Gareth Barry, Joleon Lescott. We have a lot of players who think and behave in the right way. You have to make sure they're the role models.'
- Inter Milan