Weird about the skin rash.
As for SF, when it comes to an extra SF, like the third string SF, it's pretty common just to throw in a SG until an injured player recovers, their dimensions are very similar. So we have Hayward, Carrol, and the injured Williams. No problem letting even Murphy (if he has any talent) fill in during foul trouble. I think even Burks has done a little SF.
On a slightly related topic, remember Travis Leslie came into that workshop thing that the Jazz had. If I understand correctly, he is more of a small forward than a SG, so if they pick him up that takes care of it. (which kind of makes Murphy unnecessary, doesn't it.)