Ice Cube isn't even a tiny bit upset his BIG3 player/coach Chauncey Billups is leaving the BIG3 for a front office job with the Cleveland Cavs ... telling TMZ Sports the league is SUPPOSED to be a pipeline back to the NBA. - See more at: http://www.tmz.com/2017/06/21/ice-cube-chauncey-billups-big3-cavs-iverson/#sthash.bXdpokm0.dpuf