Doing a Leeds is long gone for most Prem clubs, the amount of money pouring in and the availability of refinancing puts paid to that. However FFP is important, not that we should worry considering our prudence but that is a factor and hopefully FFP will show teeth with City’s dodgy practice.
I agree, no sane bank would call in the debt of a football club - just charge them higher interest rates and take the money that rolls in.
That wasn't my point though, we and other clubs can't afford to be reckless with money - simply because you end up locked into huge contracts for players that you then can't shift; see Woolwich.

