By Keith Weir LONDON (Reuters) - The credibility of European soccer's Financial Fair Play (FFP) rules will be questioned after it emerged that Manchester City and Paris St Germain would not be banned from the Champions League for breaching them. City and PSG have been offered settlements for breaking rules designed to limit clubs' financial losses and those agreements could be rubber stamped as early as this week. The punishments likely to be meted could include fines or limits on the size of squads that clubs can field in Champions League matches next season but a ban - the ultimate sanction - is not believed to be on the agenda. Executives from rival clubs may cry foul that big spenders such as City, backed by cash from Abu Dhabi, and Qatari-owned PSG are not being hit harder. More...