If we look at MU lineup,
source: googleThey lost important players who competed in the World Cup. So, this might be used by Ten Hag to keep MU players physically fit for who are not playing in World Cup. this results proven if MU not ready to play with their young, bench and reserves team as starting XI. but, this matches will become a great input for Ten Hag to buy some players on this winter transfer.
Rashford is gone? I did not know that he was injured or anything, I thought he was healthy, if he is ready to play by the time United gets their first game, he will be their striker for sure, they have used him instead of Ronaldo, and put Martial in late game after Rashford was tired and it worked out for them.
In fact, so much so that they literally did this when Ronaldo was there, instead of using him, they used Rashford and Martial later on during games. Aside from that I agree with this lineup, sure use some of the young guys to get them some playing time and give a bit of rest for the older players like Burno Fernandes who we wall know will be in the line up.