Not sure if KDB will feature in the arsenal match and I can't see him being rested for the 2 games up to that matchThink KDB will be on the bench after two games with Belgium this week. Save him for Arsenal, he's got to be rested from time to time. Jack was in good form for England so I'd expect him to start.
We have 6 games in quick succession, between now and 1st October.
The Milan champions league match is in between the arsenal and Brentford matches. There'll be a lot of personnel chopping and changing and I'm not sure what games Pep will prioritise,if any.