That's a bizarre question. Teams like Sunderland have had plenty of support and not been able to stay in the premiership. To practically guarantee premiership survival you need the revenue that comes with massive crowds - we need not apply. However 30k is enough to give us a decent chance of staying up long term, we could have averages higher than teams like Bolton.What the biggest capacity we would need on a regular basis if we were to reach and stay in the prem?
While those roofs aren't moving, you could easily bunch the seats up a bit for an extra couple of thousand - they're all fixed to runners, so easy to move.Not sure we can expand beyond 30k without quite a lot of hassle.