The only permanent solution to Manchester United's squad would be to replace Ten Haag. Because he's been around for a long time and friendly behavior has weakened, players will only perform better if he's down. Although players may not develop a passion for the Manchester United team, it is possible to do so. Because Ten Haag's behavior is not obvious to the players, there are weaknesses, so from different angles I can understand and this will be a permanent solution. Manchester United team will perform well only if Ten Haag is replaced by a new experienced coach.
I don't think Ten Hag will be sacked anytime soon because I guess the board will also consider the long-term plan initiated by Ten Hag. In other words, it's already absurdly wet so it would have been better to just dive in.
He's already spent quite a lot of money and also brought so many players to Old Trafford. If there is a new coach, then maybe that person may not fit in with Ten Hag's legacy, which means there will be another overhaul, and it will cost the board a lot more money.
After all, it's only been three matches, and he also hasn't had the chance to field his best squad, and their new players still need to adapt. If in the middle of the season Man United look worse, even though they are already playing with their full team, then that could be a consideration for ousting Ten Hag.