The cash coming out of China reflects the fact that few want to go there! If they think he is worth £100m it doesn’t mean that a) he is worth it and b) he will want to go! I think he would prefer a CL club possible Seria A and therefore we will get a token fee at best!
I was having a laugh at the costing, but as a wider point, he is worth whatever someone would pay. He may reunite with Bobby Manc or go for a big cash finale. I wouldn't begrudge him anything. In terms of monetary value, a transfer fee for Yaya isn't nearly as important as getting his wages off the books