It may not be a major change but certainly there will be an improvement or it could also make a major change nobody knows Manchester United has strengthen their front line by signing Bryan Mbeumo, Benjamin Sesko and Cunha this 3 players can bring a major change to the team, they have won the pre season tittle and their performance was good though we know that pre season games doesn't determine the main games when they start but it's certainly a sign that we will see a different Manchester United this season I just wish they could sign in a good goalkeeper because they will conceive more goals if Onana still remain in their goal post.
If you change the position of players or the squad depth, you are definitely going to see some improvement than before but you know as the squad becomes used to a particular pattern so is other teams studying one another and not every team can withstand long performance, as time goes on you begin to see a different version of the team playing some disappointing games you never expected. Perhaps Manchester United is build different but we have to see in the league.
There are some players that are still in talk to be bought but don't know how serious the deal at this point. If they can bring those deals and have it completed, the team will have more strength than before and also sell some of the players that are long overdue. They will only be wasting weekly paycheck on some of them if they don't sell them to utilize the resources for the development of the club. I expect some purge but there hasn't been any serious one yet.