So presumably if the money was available, such a ground could be purchased and brought up to the required standard - beneficial to the existing owning club, and I guess a lot cheaper - and more environmentally friendly - than building a whole new stadium.
Really? I can understand there may have been some planning restriction as a sop to the inhabitants of Falmer village who have their lives ruined, but I wouldn't think having a second stadium would make that any better - it's still hoards of rampaging football fans invading their peaceful rural...