Probably not much tbh. I've seen estimates that suggest we'd get about an extra £8m a year in the championship (from extra TV revenue and slightly higher gate receipts) but we'd likely have to spend more than that (especially including wages) just to try and get a few players in who wouldn't be utterly embarrassed at that level, nevermind the spend that would be needed to really compete. Add that to the remaining players getting promotion wage rises, which they've likely all got in their contracts, and we wouldn't really be any more profitable. The only advantage is that it's less of a risk for a buyer as they're only one good season away from the PL riches, but I really don't see promotion as the sudden windfall for Donald that some seem to think it would be.