Mike Tyson just heaped some huge praise onto the star boxer ... saying if the 28-year-old continues fighting at the level he's currently at, he can without a doubt become a legend in the sport.
Iron Mike threw out the massive compliment in Beverly Hills on Friday afternoon ... while talking with TMZ Sports about people comparing Tank to a younger version of himself.
"Tank is a great fighter," Tyson said of the comp ... before adding, "He'll be [a legend] too if he keeps fighting.