Fulham boss Roy Hodgson says they must heed the warnings of crisis club Portsmouth.
Hodgson admitted the problems of Portsmouth, who have gone into administration with debts of around £80million, should serve as a warning to clubs like Fulham.
"The existence of the football club is more important than short-term gain," he said.
"If we need a reminder of that, you have the short-term gain of Portsmouth winning the FA Cup (in 2008) which is really something that after years of moving between the top two divisions they thought maybe was beyond them.
"But when you see what happens as a result of it, with the club going into administration, that would bother me more than hoping or believing that Fulham could stay in the Premier League for years to come."