The Manchester United team has only been built for a few seasons by Ten Hag and it is very different from Manchester City, I don't think it can be compared and in the future I still believe that if Ten Hag continues to make improvements and cover up the mistakes that have occurred then it is very likely that the Manchester team will United will be perfect again or match Manchester City's level for the title competition.
But, Ten Hag only have a year to build Manchester United, I don't think he can. If Manchester United didn't qualify for Champions League in the next season, I'm 100% believe they will sack Ten Hag ASAP. And then, the problem can't be resolved since the team always change the team for every one or two years.
The best solution is to sign Pep Guardiola or Ancelotti, because if they failed to bring Manchester United glory, the fans will blame the players instead of the managers, so they can survive and build Manchester United for many seasons.
Why shall we feel concerned about Ten Hag's contract? United can hand him a new contract. Ten Hag should prove he's worthy of managing United. Last season was bad for him because United had too many injured players, causing inconsistency.
Are you kidding about naming Ancelotti or Pep as United's new coaches? Because they'll never go there. Pep has one year left on city and he doesn't want to extend it, and again, Ancellotti will ignore United's offer because he is on his lovely team now.
Ten Hag must be given a two-year contract extension to help him rebuild the club, and he is key to United winning two trophies in two seasons, which is amazing.