I see wheere you're coming from in principle. But let's be real, the circumstances you describe make life easier for any CB. Playing a low block might compensate for a few weaknesses Maguire has and other CBs valeud at roughly the same price don't have but that doesn't mean that they would still be better as they offer the same things and more. They might not be able to play out their pace or speed of thought to the same extent as in a more ambitious role as much but at least occasionally while not being worse at what Maguire does best.
Even without the whole meme thing he'd be overpriced at 40m but with that in mind, a potential buyer would not only pay above market value, he'd also pay above market value to make himself the laughing stock of the football world and a shitstorm from his own fans. Would be a different story at a moderate price but probably you just can't afford a book loss right now. Maybe a loan with an obligation to buy next year could solve the issue.
I’m only a guesser like most in here, so forgive me if this sounds daft, but please consider that if he wasn’t a much better defender in a more traditional system then how on earth did he become not just an expensive central defender but the most expensive central defender ever in the history of the game?
And ok, with the benefit of hindsight, it’s pretty damn obvious that Utd paid at least £20million too much for him but, remembering the clamour at the time, he’d have sold 10 times over if he’d had a £60million price tag at that point.
I remember reading threads on this very forum at that time and iirc the vast majority on here, all football fans who‘d watched plenty of him doing what he did in the way he did it, were enthusiastic for his acquisition if somewhat puzzled by the 8 being where a 6 should be in the sums being bandied about.
IMO the way the game has changed in the last few years has made Maguire obsolete at the top level, but doesn’t mean that he wasn’t very very good at what he did when his particular attributes were in high demand because they were a valued asset in games played as they were back in the day.
Football’s much more fluid nowadays, defenders in the expansive in-vogue systems of play need to be quick witted, fast, agile, technically excellent, cultured etc. All the things that big Harry is definitely not.
However, it’s worth noting for comparison that in systems of play in international football, that lag behind top flight league football because fluidity is difficult if not impossible to impose when squads have very little time training together, Maguire remained a staunch regular in a good England side and looked generally good doing it while at the same time looking like a lumbering ox pulling a cart load of turnips when playing in the Premier League.
I stand by my opinion that he was a very good football player at the time of his record transfer fee but that the game has moved on and his once positive attributes are a downside at this juncture.
I also think that he could still be a valuable player in a side playing deep defensive football at a lower level but that his whacky wages are pinching out any demand for him in the bud.