Former Dallas Mavericks majority owner Mark Cuban is reportedly "back at the table" after the franchise fired general manager Nico Harrison, who had allegedly alienated Cuban.According to Sports Illustrated's Chris Mannix on Thursday, Cuban, who still holds a minority stake with the Mavericks, will once again be involved in roster decisions."I’m told that Mark Cuban, the Mavs’ minority owner who was exiled from basketball operations by Harrison, is back at the table," Mannix wrote. "I’m also told that radical roster changes have already been discussed by Dallas’s new brain trust. Big changes could be coming to Big D."Cuban was reportedly not consulted about the blockbuster trade that sent franchise star Luka Doncic to LA. The deal, orchestrated by Harrison, drew criticism from the Mavericks fan base. Cuban previously expressed that he was "frustrated" with Harrison for "freezing him out after the sale" and for "not consulting him" on the trade.The Mavericks have had a rough start to the 2025-26 season, as they are tied for the second-worst record in the Western Conference (3-9). Aside from Kyrie Irving, who is recovering from an ACL tear, Anthony Davis has also missed time due to a left calf strain.Mavericks minority owner Mark Cuban reportedly has a 'role' in Nico Harrison's firingNBA insider Marc Stein said that Nico Harrison's dismissal from the Dallas Mavericks was a decision that has been "brewing for quite some time." In addition, Stein wrote that Mavericks owner Patrick Dumont met with Mark Cuban to inform him of the decision before making the announcement.On Wednesday, a report from The Athletic's Joe Vardon, Christian Clark and Sam Amick said that Cuban "made a case" to Dumont in recent months that Harrison's leadership was "steering the franchise in the wrong direction."While Cuban has yet to confirm any involvement in the Mavericks' decision to fire Harrison, reports indicate that the billionaire may have had a hand.With Cuban back in the fold, roster changes are expected for the struggling Mavericks. Should he decide to blow up the roster, he can build around 2025 No. 1 pick Cooper Flagg, who has shown flashes of his potential early this season.