This may sound a little odd, but if your friend is a genuine good person, I highly recommend that you do it. My only hesitation is that I think you should just do an assessment of the person themselves and their motivations. If that is all good and there are no strings attached (other than the obvious repayment). Do it. A quick guess, but this is likely a very good person that can afford to put some "good out there." Let them put good out there and you never know what is going to come back around.