Conor McGregor Signs UFC Contract Agreement for Dustin Poirier Rematch Fight

Conor McGregor signed a contract Thursday to fight Dustin Poirier at UFC 257 on Jan. 23, according to ESPN's Ariel Helwani . Helwani noted Poirier signed the pact last week. McGregor and Poirier met for the first time at UFC 178 in 2014...