Dustin Poirier claims Conor McGregor didn’t follow through with his sizable charity donation in the aftermath of UFC 257. Prior to their rematch in January, McGregor promised to donate $500,000 to Poirier’s “The Good Fight Foundation.” MMA Junkie confirmed with representatives from both teams the night prior to UFC 257 that banking information had been exchanged , and the last of the details were being finalized. Then Poirier won the fight by second-round TKO in the headliner in Abu Dhabi, and according to “The Diamond,” the trail went cold. Related Video: Dustin Poirier chokes out the 'World's Strongest Man' Conor McGregor to Dustin Poirier: 'I'll be in the middle from the very go' at UFC 264 Video: Will Dustin Poirier vs