Manchester City have long been one of the top clubs in England, even before their enormous cash injection in recent years. Players such as Colin Bell and Franny Lee made them a force to be reckoned with in the 1960s and 1970s, and even earlier than that, legends such as Bert Trautmann and Peter Doherty played at Maine Road. Despite their successes over the years and the talented players that earned it, there are always failures at every club. City have not been immune to this common football faux pas and if anything in recent years the problem has escalated. Since Sheikh Mansour took over the club in 2008 he has allowed his managers to spend big in order to bring success. Although this has been the case, with City winning two top flight champions trophies since 1968, it has resulted in a constant influx of players creating competition for every place. This is one of the major factors for players who have not fulfilled their potential at The Etihad in recent years, as they are often forced to sit on the sidelines after one or two bad performances. However, many factors influence a flop at a top club and not just competition for places. Other players have struggled with pressure, adapting to a new style of play, or have even be over-confident. This article will run through the top 10 players who have never reached their full potential at City and look at some of the reasons why. Click next to begin!