It appears as if we have ourselves a lightweight championship fight for UFC 269. According to MMA Fighting, UFC Lightweight Champion Charles Oliveira will defend his title against top contender Dustin Poirier in the main event of UFC 269 Poirier, 32 claimed that he had his eyes set on Oliviera and the 155-pound title following his second consecutive victory over the brash-Irishman Conor McGregor at UFC 264. The aforementioned back-to-back wins over McGregor rounded out Poirier's current 7-1…