That's basically impossible. He's doing football stadiums because they're the only venues in the US that can hold the 70,000+ attendees he gets per show.

The tickets are sold specifically for the venue, so they'd have to either refund everyone and have them repurchase tickets or try to assign seats based on the old venue and refund whoever didn't fit.

Then there's scheduling and logistics. The show in question is next week. There's absolutely no chance they could just call up another stadium and book it. Venues book acts like a year in advance.