Ten Hag wasn't really a possession manager at Ajax either. As a top team, you end up having a lot of possession against smaller teams because you have so much quality and they often let you have the ball (although there aren't as many defensively minded teams in the Netherlands); but at the core, his Ajax team was also about being a high-pressing, very vertical team - closer to Klopp than Guardiola, let's say. And as you say, before Ajax he was managing smaller sides, where he was known for making them perform well above the sum of their parts (hence his constant 'promotions' to bigger clubs), but not for posession. So calling Ten Hag a possession-focused manager makes little sense to me, as you also said.
Regarding your last paragraph: I do think he's still more in the latter camp (pressing to force transitions), and also at United doesn't care much about the former (possession) at all. That's also what he said at the start of the season ('we want to be the best transition team' - whch of course doesn't mean low-block, counter-attacking), and it shows in the stats, too. Or at least, an article from the Guardian from a few weeks ago (
https://www.theguardian.com/footbal...r-united-chaos-so-has-gambled-on-embracing-it - which is more generally quite interesting I thought) pointed out that a couple of key stats about transition and vertical play are way up this season:
So something
is developing in that sense. But I anyway agree that Ten Hag is stuck between different lines of thought, although I'd actually argue it's two different things (instead of half going for a possession aproach).
First, it seems that he's too worried about defensive security and accepts that some players work better hanging back further (like Maguire now). Other managers might just force their CBs to move upfield and accept the issues that come with that until the ill-fitting players are replaced. Of course, it seems that replacement is what Ten Hag wanted for Maguire last summer and he's unlucky that it didn't materialize. But so now he's adapting tactics to this kind of player rather than adapting the player to the tactic (to their best ability).
The second thing I think is that he's desparately trying to get goals from somewhere, and playing some players just because they do tend to score goals. I'm convinced that's why McTominay has been playing so much of late. Surely Ten Hag can also see that McTominay is not good enough at other aspects of play and an ill fit tactically; and indeed he appears to be another player that was supposed to be gone last summer. So I think McTominay is playing because he has a knack of scoring goals - which he has also actually been doing fairly regularly (especially for someone in his position). Same with Rashford. Garnacho starting on the left lately shows that Rashford has dropped in the hierarchy - but him starting on the right suggests that Ten Hag ranks him above Antony in that position. That can't be because Rashford contributes so much to overall play (Ten Hag can't have missed how Rashford doesn't track back enough - especially with Bruno highlighting post-Everton how much work Garnacho does in that regard), so here too, I really think Rashford is playing because at least he had at least one scoring streak in his career (even if it's pretty long gone now), while scoring goals has never been Antony's forte. (And there is no further competition on the wings, with Sancho out, Amad injured (and unproven), and Pellistri not being at the required level yet.)
To me, if you look at team selection and tactics that way, it explains a lot of what's happening. I can also see how this line of thinking (adapt to the defenders available, get goal scorers on the pitch) makes some sense: it's a results business, especially at a club that's supposed to be in the top section of the table, and preventing and scoring goals are invaluable at a low-scoring sport like football. But at the same time, the approach really hampers tactical cohesion and overall progress. I'm therefore thinking Ten Hag should maybe have bit the bullet already in spring and just decide 'feck it, we're going for it', and focus on his transition approach - at the cost of more weird scorelines and losses. But then again, he did finish third last season doing pretty much the same thing, which somehow got United to pull off enough wins against smaller teams to offset the boring football and losses against everyone else. So maybe Ten Hag is thinking this is the only way to replicate that feat and end up in the CL spots again? Cause there's no guarantee that just playing transition football and making Maguire position like Van Dijk wouldn't lead to results like Spurs have had since their first-choice CBs got injured. (I.e., lots of points lost.)
I'm not sure there's a conclusion to his, but that's my thinking so far, anyway!