Cancel it, not worth the risk. We can get a game behind the scenes midweek if Pep thinks we need to replace the lost pitch time.
That lineup, whilst likely to have a couple of changes to it, is one you wouldn't be too surprised to see against Burnley, and even with a full squad named, it looks very very light in attack.
We've got the quality and bodies in defence with or without gvardiol but we need at least 1 and I wouldn't argue against a second ready made option for the front 5. Txiki's got a fair bit of work to do, moreso than he would normally have left this close to the season starting.