Kamaru Usman tells TMZ Sports ... he was all set to fight Jorge Masvidal in July -- until the coronavirus killed those plans. But he's still ready to hand out another ass-whooping, stat!
So, while the UFC tries to line up the next fight for the UFC welterweight champ -- he's talking mad trash to Masvidal, Colby Covington and of course ... Conor McGregor.
First ... Masvidal.
"Honestly, if I'm being honest, do I believe that he deserves the fight next?