I dont think Nike could dessert Juve for a dirty image, since they themselves arent exactly the cleanest brand in the world. Moreover, from a financial perspective, they could only profit from a scenario like this. Why? Because Juventus as a brand is not diluted, it continues to have the pulling power any solid brand would - only in this case Nike can renegotiate a contract that now suits them from a financial perspective. Something which they wouldnt have control over if Juventus were in Serie A and the Champions League. Now, they can pay a 2nd grade fee for a 1st grade team. Whichever way you look at it, it works for them.