For those who have outstayed their welcome at football clubs, the writing is not usually on the wall but on a banner.
Manchester United's matchgoers pride themselves on not outright scapegoating players. You could also count on two hands how many former players have been booed at Old Trafford in the last 30 years and only the owners warrant ink daubed onto a bedsheet.
The most brazen act of mutiny was to don a Jose Mourinho scarf while Louis van Gaal was still the manager. And on the night a handful of fans donned such scarves for the goalless draw with Chelsea in December 2015, a vocal contingent in the second tier of the Stretford End chanted, "F--k off Mourinho".