Georges ST-Pierre should fight Tyron Woodley

GSP I believe is most people's (including mine) greatest welterweight of all time to this point...but when Woodley became champ, I believed he would hold on to it for a long time and potentially put together a run to rival GSP.....

It makes a lot of sense to fight GSP for legacy and to see who the welterweight goat is, they're both around the same age, ok, GSP has a few more title defenses but I think there's only a small window to push this fight before both athletes are truly past their prime and it got me thinking, Tyron calls out GSP every chance he gets but GSP never even mentions him....why? Does GSP know Woodley is a bad match up?
Something seems a little off, this fight actually makes a lot of sense, why is GSP not even entertaining it?