I get the point Steff (and I don't get wound up re Dier, that much) but his best outcome is he has an "ok" season, we know what his ceiling is. He's also just another hangover of a time/team that didn't quite make it and has fallen off badly.
I would genuinely prefer we sold Dier and brought back Lenglet (lets say even outlay in/out/wages), not because I rate Lenglet but because at least he isn't the past, had an ok season himself (not quite the disaster class Dier did) and potentially has a better ceiling.
Someone (that he listens to) really needs to have a word with Dier, that stubbornness/self belief is how you make it in sports in the first place, but his time here is up, his game certainly doesn't suit a highline/possession based team that expects to play out back and pass around a press.