If Arsène Wenger was told by 80 per cent of Arsenal players that they would not play in his team, then he would be gone. Immediately.

Losing the dressing room is never that blatant, but it is final. There is no appeal – not to the board, the owner or the fans.

Even the glamorous and media-friendly José Mourinho suffered under that iron law. Beleaguered football managers must look longingly at the Labour Party.

A vote to exit the European Union has led to mass resignations from Labour’s shadow cabinet and frontbench. Jeremy Corbyn has lost a vote of no confidence by 172 to 40 and has the support of not a single one of Labour’s members of the European Parliament.