On oblivion when i talk to fathis ules for a gray fox mission he always says you've made your choice now leave me be. how do i make him talk to me so i can sell stolen stuff to him?

Try selling it to the other fences since you chose to help some other guys in another mission othy he keeps sayiner than him is whg that. maybe you should wait a long time and he might get over it, otherwise just sell to other fences