I don't think a new coach - no matter what his name is - makes much of an impact on attendance.
MN fans think the product being offered is not worth the cost of tickets and seat donations. Yes, winning more will help some - but it doesn't change the cost of attending a game (including parking, etc). to really make a difference in attendance without changing ticket prices, a new coach would have to come in and win big. and by big, I mean contending for a conference title, contending in the conference tournament, and making an NCAA tournament run.
maybe Musselman is a good enough coach to pull that off at MN. but it's not going to happen overnight unless Muss brings along enough NIL to buy himself a new roster.