I was just thinking about this too. I don’t think his request will have anything to do with his “power” to demand that her end of their deal be upheld. I think that it will show that she finally believes because he will ask her to do something that she wouldn’t agree to do unless she did finally believe, or it will show that she has actually come to trust him and like/ understand him (which could also, in theory, show that she believes). Like he could ask her to help him free Belle or do something that will help him get his son back – something that shows a different side of him that we don’t see in SB.