This summer's unofficial managerial transfer season was already set to be one for the ages even before the announcement that Thomas Tuchel would leave Bayern Munich at the end of the season - now, though, it's surely been taken up a notch.
Jurgen Klopp is leaving an enormous hole behind him at Liverpool, Xavi is set to depart Barcelona, and a number of Premier League managers are not exactly certain of keeping their place for next term.
How quickly things can change - Tuchel was the man parachuted in to rescue Bayern Munich from trouble; that trouble of course being the prospect of a treble, which they were still very much in the running for.