A moral conundrum

So the Royal Bank is buying a fancy new £4 million scanner which it will give to the Lothian Health Board. In return, RBS employees get privileged access to the scanner for 25% of the time. The BBC spells it out.

Is this a Good Thing? Is it better to have three-quarters of a loaf rather than no loaf at all?

Would it have been a Better Thing if the Bank had only asked for 10% of the scanner's time? And, if you think that the 25% deal is acceptable, at what percentage of exclusive access - 40, 50, 75, 80 - does the deal become unacceptable?

Difficult one ...