Ange Postecoglou has been sacked by two Premier League clubs in four months: Tottenham Hotspur in June (two weeks after winning the Europa League), then Nottingham Forest in October after just 40 days and eight games (with six losses and two draws).
His time at Forest was the shortest non-interim reign in Premier League history.
The Premier League’s average tenure for managers is short and trending shorter, currently around two years.