While plenty of football clubs search for continuity and consistency as they look to improve and build the team year on year, a fact of life in most major European leagues is that managers who fail—or are perceived to have failed—get fired, with quite some regularity.
In turn, recently successful bosses are poached from rival clubs, who then in turn need to appoint a new boss of their own.
All told, every summer it gives us a number of teams throughout the continent who look forward with optimism to a brave new era under a new head coach. It works out for some, goes spectacularly wrong for others, but in every case we have plenty to analyse as they restructure their side to suit their will.
Here's how we grade 20 new bosses in Europe on their chances of success during the 2014-15 season, taking into account their reputation and recent form as managers, the quality available to them and the expected levels to reach, the club's last finishing league position and, of course, potential transfer activity.