Our post Fergie testimonial/almost testimonial squad makes quite a reading. The "preserving the value" Era ushered in by Woodie and co was truly something.
De Gea (12 seasons, at least 5 seasons post his sell by date. Last contract on ridiculous wages that most 20 goals/season strikers weren't getting back then)
Eric Bailly (7 seasons, 6 of them were garbage. Mind still boggles why he was given the last contract extension)
Phil Jones (12 season, 8 were garbage/on the IR. Even a more ridiculous last contract extension than one given to Bailly)
Lindelof (7 seasons, all range from bad to mediocre)
Marcus Rojo (7 seasons. Maybe 10 games in those 7 seasons were good. Iirc, the last couple of seasons we paid him to play for other clubs).
Shaw (10 seasons, may be 3 good seasons in those 10. Shawberto, apparently. Should have been sold with one year left on his deal, instead he got a bumper extension)
The McTominator (7 seasons. Jose's parting gift to us. Watch him get another extension)
Jesse Lingard (7 senior seasons. West Ham were stupid enough to want to pay for him with a year left, but we said no, we want some more. Then he left on a free).
Martial (9 seasons. Another one who should have been let go or sold with one year left but instead we gave him a bumper new contract; after that he played like 10 games for the club and was bothered in 2)
Zlatan got a contract extension at the tender age of 92 after he tore his ACL. Rashford got a Mbappe contract. Bruno was given a contract extension when there was no need to give him one and we could have easily waited till a new manager was in place. Mata's numerous contract extensions.Rooney and Nani contract extensions post Sir Alex. One season we paid Nani to play for Sporting. Pogba was kind and saved us by not signing a contract extension. I am sure there are a few others that I am missing.The list is endless.