So another 180 for tactical style for you with new manager change. Cant even count how many this is already, think every manager was opposite to previous manager you had.
I personally feel (this really matters squat in here i know

) that Manchester United will be hard pill for ten Hag. Okey he is very good in possession football that he uses in Ajax. He has changed a bit of stile with Tadic (f9) and now Haller as regular striker, + ofc losing several top players. But Manchester does not really fit the pill for his main flow of tactics. First and priority should be getting back line in order. Transfer market should focus on back line + DM.
Also feel there is misconception of his transfers and ability to find players. Most of the hits (he has lots of misses also) for him has come from inside the Ajax youth + amazing Ajax scouting network that spreads into south America where he got several main players. This might not go through any more in PL as the work permit for younger South American guys( Antony, Martínez, Álvarez) might be harder to get + giving these young guys opportunity to play in ruthless league and Club that wants success will be hard sell. Eredivisie is also easier to ease players into team and give more game time, there is no reason to sugar goat it, PL is simply top league. Haller and Klaassenn where already proven before PL, but just misused in by managers and where good buy for Ajax and Tadic ofc(Blind being former Ajax player). These are all good for Eredivisie but top PL is another ball game.
Sure thing ETH will try to get some guys with him. Martínez, Álvarez would be main picks but will come expensive for sure. Dont know your work permit situation either, how many slots you have open?
Player who will shine under him i assume will be Sancho. Still young and technically good to change his game to fit ETH vision.
Club must be ruthless but also smart in transfers. Be extremely patience, specially if you dont figure out back four and get the right guys in. Same goes to fans, this might long project.
I mean ETH is definetly more than ready than Ole to make a bigger step up, but otherway around Manchester United as a club and squad might not be at state where to support and facilitate manager like ETH.
And small last idea:
If you take all the success and good things ETH has done during his reign as an argument. Dont forget we are talking about club name Ajax who has long years of breeding this success from their core. The club structure, staff, youth academy is all that lets this happen.