Terrance Crawford is confirming he was, in fact, offered a two-fight deal with UFC superstar Conor McGregor ... but the boxing champ ultimately turned the offer down -- 'cause there was no chance in hell he was about to step in the Octagon.
McGregor previously claimed the two combat greats were positioned to make "hundreds of millions" in an epic boxing/MMA showdown ... an ordeal that was pitched by the chairman of Saudia Arabia's General Entertainment Authority.