I'd say the players they've bought, with the possible exception of Rice, weren't obvious "big" names, even if the fees paid were significant. They clearly have the ability to identify what they need from a player and/or see how that player fits into the current system or improves it.
Bringing this back to Ten Hag, if we'd improved this season in terms of a consistent and coherent system, even if it didn't work all the time and even if, in the end the league position didn't improve, it'd be fair to say he needs more time and is building towards something. As it is, there's no evidence of that. We've regressed. The players he's brought in have not improved us or moved us towards whatever system he's trying to play and in the end, it's descended into total chaos. How a top class manager can think it's acceptable to concede so many chances I don't know. His stubbornness is also a huge red flag.
The key point here is that Arsenal have been proven right to stick with Arteta, and they're getting the benefit. But I would say that even relatively early on you could see that there was a coherence in what he was trying to do and a direction of travel. We seemed to have that last year, at least until the Carabao Cup final.
I'm not suggesting you're saying this but some seem to push the idea that just because Arteta came good, Ten Hag will as well is clearly flawed. You could use that argument for any failing manager.
I've asked this question on here loads and have never had a coherent or clear answer from anyone: what exactly is he doing well? What can anyone point to to say that with more time and more money there's more chance that not he'll come good? Pointing to another manager who did come good isn't an answer.
Ten Hag has had a lot of bad luck to be fair to him. The question is whether the club proceed on blind faith and give him more time with a single year left on his deal and the risk the players/type of player he want's won't be wanted by the next man in. However they proceed, it's a big call for INEOS. If they get this wrong they lose credibility.
They've been generally quite well known players and then they added some big transfers this season in the hope to push them to the title.
Re Arsenal - I don't know if anyone on here believes in blind faith but context is also important. Arteta's team is almost exclusively his own signings, Saka and Saliba (arguably their two best players alongside Odegaard and Rice) were there already but otherwise the entire 1st team and essentially all the subs are Edu's choices that I assume he will give the 'ok' to. We don't have that setup, recruitment has been a joke for a decade.
Re ETH and what he does - I'm happy to give my thoughts. I do think, as ever in these types of scenarios, the pendulum of rationality has long swung into absurdity with how people are talking about ETH, like he's a random bloke from down the pub who chanced upon the managerial role at United. I'll break it into 2 seasons because he's had two very different years with us.
1st season. All round results were very good considering what we'd come from. 3rd, 75 points, good defense with a less potent attack. We won a cup, lost in the final of another and stylistically we knew it wasn't what he planned to do, but then he essentially inherited a counter attacking team made up of Mou/Ole signings. Licha was excellent, malacia good for the price, Case was great that first season, even Antony did well in his limited way by making us incredibly hard to get at down that side.
2nd season. It's worth saying here how previous coaches made a song and dance about wanting to move to this system but never doing it, either because they couldn't or wouldn't risk it. You could hire any half decent coach, fund them as our managers have been funded and play counter attack and probably hover around 6th-3rd but we wouldn't win anything major. The fact ETH is trying to do it and move us, about 10 years too late, to the single DM is a positive for me, despite how awful watching the non existent midfield setup we have has been. Injuries have been a joke, people seem to be tired of hearing about it but all teams have tanked with key injuries, ours have just been all across the defence and then people ask why are we conceding so many chances and why is Onana having to make so many saves...in part because we've gone to the single DM (which doesn't really work with a 10 in the way we play), in part because our core is slow, mostly old players but mostly because we've basically had a different back four every game. It's been atrocious to watch at times make no mistake but since Hojlund returned there have been a lot more goals and lot more influence from Bruno so something has clicked in the offensive unit, the issue is our defensive injuries have been a joke.
2 points I think many posters deliberately ignore on ETH. Youth development. I can't tell you how excited I was when Ole gave the press conference the summer after he was made permanent to say the recruitment was changing and young, hungry players were now how he would build the team. He ended up signing guys like Cavani, Ronaldo, Varane.. ETH's single older signing was Case who wasn't his choice, the rest are all younger players who need to be coached/developed. Are we so used to the awful style of recruitment we complained for so long about, we have forgotten than a 21 year old Hojlund likely won't perform at the same level as Ibra or Cavani (I think he's actually outperformed Cavani now I think about it)? Point being he actually wants to work with these younger players which is something that is important and Dalot looks the best he's looked, Mainoo I think is being managed well, Garnacho has improved massively off the ball, Hojlund is improving and really it's only Amad people are bummed about, and he is coming off a serious knee injury so is the club not right to be quite cautious with him.
The other part, which really is the most important, is you can't really doubt his knock out credentials. It's not chance that the 3 experienced CL level managers we've hired (LVG, Mou, ETH) all won cups and domestically he's been quietly good there. Caraboa win and back to back FA cup finals, I can't see us winning vs City but no other manager post SAF has done what he's done; Top 4 and a cup in a season. If we somehow beat City he'll also be the first with back to back cups.
I do think injuries have been a big factor and the real red flags for me are how he thought Mount would work, I remember having a long argument with someone on here about how every team would simply run straight through a midfield that Case/Mount/Bruno, and obviously Antony. But if Ineos are now taking transfer input away from him, that issue is gone, and I think back to games where I think we've looked good - think of Bayern before the Onana howler for example, we looked like a genuinely top class team, and there is something there when we have most of the squad and players shut out the noise/do their jobs on the field.
I have said many times I suspect he will be moved on in the summer, this is a results based business and we will inevitably lose the final to a much better team than us and the season will have been below the standards most expected. But I don't see many standout candidates to come in and really change things. Plus it irks me that it seems many players have an issue with a manager finally holding them accountable for fitness work (which contrary to the caf myth about us playing like a basketball team, we run less distance and sprint less than other teams, we're about 10th overall in the Sky article) which we've lagged behind others on for so long.
In summary, I think there are/were a lot of positives but they were drowned out by the shitshow this season.