If Caitlin Clark does take Ice Cube up on his $5 million offer to play in the Big3, it's clear Nancy Lieberman wants dibs ... telling TMZ Sports she'll make sure the Iowa sharpshooter is ready to take down some former NBA vets!
Lieberman -- an ex-WNBA star who actually played for the Los Angeles Lakers' Summer League team in 1981-- has been the head coach of the Big3's Power since 2018.
She called the 3-on-3 org.