This fight in my mind could make sense...

Hopkins wants to avenge the two loses and by fighting Taylor ir would give him an even better chance of cementing his legacy

Taylor is coming off two loses to Pavlik but he needs to get himself back into the picture again. Hopkins' name at this present momment is a lot bigger than Taylors although hes already beaten him twice. So maybe Taylor offering Hopkins a third fight would in fact help get his name back into contention?

Taylor is now fighting at 168 and with Hopkins being at 175 they could easily arrange the fight.

Maybe im just seeing it wrong, but if I was Hopkins I would certainly think about it...