As Mount picked up yet another injury, Red Devils fans were left frustrated as they slammed the former Chelsea midfielder on social media.
Supporter @Muhamadibra412 is seriously unimpressed with Mount, posting on X: "No doubt. Mason Mount is the worst #7 at United."
Meanwhile, @unitedtunnel can't believe the latest news: "Mason Mount injured again. Has he played two full games this season? Can't believe he was given the 7 shirt."
And @TenHagEra vented his frustration over the club's decision to spend big on the midfielder last summer as he wrote: "Mount was available for free this summer. Instead we payed £55m for him to be available for a grand total of 674 minutes this season. I know the club couldn't of predicted this but it's just depressing."
Another fan, @utdloyal, felt Chelsea had definitely got the better of the deal: "Mason Mount injured again almost the 10th time this season. Thank you Chelsea for scamming us."
And furious United fan @UTDReecy had some strong words on the summer signing, posting on X: "Mount injured again, they need to send him back to Chelsea."