I've never, ever seen a footballer give up chasing a player (Boufal, maybe?) as blatantly as he did against Southampton.
Sissoko against Aston Villa for a start for their opening goal on the opening day of the season.
Midfielders lose their men every single week. Sometimes blatantly too. It used to happen almost every week when Winks played DM last season, but he's improved that part of his game fair play to him.