If Ronaldo is coming back to the premier League and is being rumoured to join Newcastle United, that I think is a welcome development.
But the reason why I had to bring up issues Ronaldo had with ten hag is because, even after this two years, Ronaldo is still performing brilliantly, if ten hag had managed the situation well as a coach, I believe the youngsters Manchester United have now would have been blinded with Ronaldo's experience to improve the teams performance. United is not doing well at the moment, their high level of inconsistency is too much to even place a bet in favour of them to win a match
I think Ronaldo will not return to Europe or rejoin one of the teams from the Premier League because he is old and Ronaldo is also quite comfortable playing with his new team Al Nassr. So it will be impossible for Ronaldo to be able to play like before again, it is even very likely that he will join Sporting Lisbon before he announces his retirement. So for Manchester united they have developed quite well under the coaching of Erik ten hag and so far they have found their best form again because they have managed to be ranked 6th for the time being.
This season is still quite long and Manchester United still has many opportunities to improve to perform better as they did in the previous season. I see that many people feel frustrated with Erik ten hag coaching style but that is his character, He will get rid of players who don't listen to what he says. And like Sancho, It is very likely that he will leave Manchester United and join another team to save his career.