The issue for Manchester United is the mentality not the money they have to spend. I must say that Ten Hag isn't the man Manchester United needs. The team goes into every season knowing they won't win the league, UCL and at their best they can only hope for the FA Cup. This isn't the mentality that kept Manchester United on top during sir Alex Ferguson era.
Mentality was not only Manchester United's problem. They also have tactical and decision-making problems. And look at their positioning against Tottenham above. Nearly all their players are in one patch of the pitch. This proves how they're having tactical problems on their side. Their forward looked too high. Their three midfielders are also occupying the same space. It makes their midfield hard to reach their forward. No doubt their attacker rarely get the ball. It makes them difficult to score.