It's difficult to avoid something like this and I hope Donny van de Beek is okay because if I look at the pictures it's clear it's going to be a very serious injury.
But apart from that incident and related to the way Erik ten Hag coached Manchester United it was very good because in fact, Erik ten Hag was also able to give good results for Manchester United before the season started.
Even though at first I thought it might just be Erik ten Hag's luck in the pre-season match, but in fact the assumption was wrong because Erik ten Hag really proved his quality as a great coach at this moment.