The managerial merry-go-round never stops spinning. Good coaches are snapped up by bigger clubs – think Mauricio Pochettino – while those who fail are quickly dispensed with.
Jobs are always available. Everton, for instance, have been searching for a new manager for more than a month since sacking Ronald Koeman. They pursued Watford's man in charge, Marco Silva, without success and now need to find a new coach to lead them away from the Premier League relegation zone.
The Toffees want a young, hungry manger with a clear idea as to how a team should play; it's why they targeted Silva so vigorously. But the Portuguese is far from alone in being one of European football's up and coming coaches.
In recent years – partly inspired by the success Barcelona had in promoting Pep Guardiola aged 37 – several 30-something managers have been given opportunities to impress and many have taken their chance.
And we've put together the top five young managers who are impressing in Europe. Expect to see them at a big club in the very near future.