Aaron Carter is ready to rumble ... and he wants to beat the crap outta any boy band-type singer willing to step in the ring with him!!!
The singer has inked a deal with Celebrity Boxing promoter Damon Feldman, who tells TMZ ... Aaron's planning to fight in April or May in Los Angeles, once the coronavirus pandemic slows down.
Aaron's opponent is still up in the air, but we're told his dream match would be against Justin Bieber. We get it ... that would get the most headlines, but for lots of reasons, it's highly unlikely.