Who should i give, my in-Law or my friend

A friend of mine is having a problem with his in-laws over a house he is currently staying of which he is planning to move out. His very close friend and course mate has been on his neck for over one year to give him the place once he moves out ( He calls and visits every month to remind him of which the wife is very much aware)

The brother in-law is aware of my friends intention to move out but never said anything till a month to the expiration of his rent and now told my friends wife that they should give him the place. My friend said he cannot turn his own friend he has assured over a year down becuase of in-law that just came to make the demand. The thing has turned into a big problem between my friend and his in-laws that he prefers outsiders to somebody that is close to him.

Pals what will he do in this type of situation.