Conor McGregor has an important trilogy bout with Dustin Poirier in July. But he is already angling for a possible title fight against UFC welterweight champion Kamaru Usman.

McGregor had quite a bit to say after Usman finished Jorge Masvidal with a spectacular knockout to retain his title Saturday night in Jacksonville. The “Notorious One” posted a video of his second fight with Poirier, suggesting Usman was “copying” his shots.

The former two-weight UFC world champion elaborated on Sunday, saying he would fight to recapture the lightweight built before moving to 170 pounds to challenge Usman:

“I’m a block at 170 guys,” Conor McGregor tweeted. “Give me till end of year at this 155 weight. I’ll get the strap and then I’ll go up again. After green fungus panties hahaha ‘cos any one of these fools can get it' – usman.”

Usman responded in kind. He referenced the fact he has finished each of his last three UFC opponents, whereas McGregor has been finished in two of his last three bouts.

When Conor McGregor inquired as to why Usman's bout with Gilbert Burns had to be rescheduled, the welterweight champ said he offered McGregor a fight, only for the Irishman to apparently go missing:

“I offered you the fight and you went missing. Let’s stay humble young man,” Usman tweeted. “I already took your pride. Don’t make me take your whiskey too.”

Quite a bit would seemingly need to happen for these two to square off.

Conor McGregor needs to get back on track with a win over Poirier before possibly challenging the newly-crowned lightweight champion, which will be decided when Michael Chandler and Charles Oliveira fight on May 15 in UFC 262.  Usman, meanwhile, could be headed for a rematch with Colby Covington.