Just wait until we have a game rearranged to a day there is a concert on and we have to kick off at 5pm so the match crowd aren't there at the same time as the concert crowd.The initial plans are for 120 gigs/events a year. I would imagine that gives plenty of scope for blank days to avoid Tues/Wed gigs for anticipated Champs League weeks.
Even if a game and gig overlap, the finish times will be 45 mins apart which gives plenty of time for the majority of football supporters to be on their way home before the arena empties ( car parks excepted ).