A LOT, I know there was this breaking news saying that one spanish team (few years ago) used FM and its engine to buy the whole squad and they did and end up safely in midtable while expectations were for them to get relegated
A Jovetic loan/option would make a lot of sense. If he comes good we have a talented and versatile striker. If not we don't pick up his option. Maybe some type of deal with an obligation to buy if he plays in X games or something...