Conor McGregor recently shared his excitement for UFC 309, which marks the return of Jon Jones and his potential future foe Michael Chandler. The event is a significant one as it takes place at Madison Square Garden, where the Irishman famously became a two-division champion.UFC 309 features plenty of intriguing matchups and notable names as Jones defends his heavyweight championship against former champion Stipe Miocic in the main event.In the co-main event, Chandler and former lightweight champion Charles Oliveira compete in a rematch of their entertaining 2021 encounter. Also, highly touted middleweight Bo Nickal takes a step up in competition when he takes on Paul Craig.'The Notorious' took to his X account to express his excitement and appears to be looking forward to seeing what unfolds. Chandler, who he was initially scheduled to fight this past June, could look to make a statement against Oliveira and turn his attention to the Irishman by calling him out to finally meet him in the octagon.McGregor mentioned that the event boasts a great fight card that should make for an entertaining night of fights:"One heck of a @ufc fight card on tonight, folks! Woah!Check out Conor McGregor's post below:Conor McGregor celebrates anniversary of significant career milestoneIn addition to sharing his excitement for UFC 309 tonight, Conor McGregor recently celebrated the anniversary of a significant career milestone.The Irishman reposted MMA History Today's post marking the eight-year anniversary of the first-ever UFC pay-per-view at Madison Square Garden, where he challenged Eddie Alvarez for the lightweight championship in the main event.McGregor was the featherweight champion at the time and went on to earn a second-round TKO to become a simultaneous two-division champion.UFC 205 was a success as it generated a $17.7 million gate and 1.3 million pay-per-view buys. Following the bout, McGregor's star power continued to rise and resulted in a boxing match against Floyd Mayweather.Check out MMA History Today's post regarding Conor McGregor's UFC lightweight title win below: