In the 1967–68 NBA season, matters began to turn sour between Chamberlain and the Sixers' sole surviving owner, Irv Kosloff. This conflict had been going along for a while: in 1965, Chamberlain asserted that he and the late Richman had worked out a deal which would give the center 25% of the franchise once he ended his career. Although there is no written proof for or against, ex-Sixers coach Dolph Schayes and Sixers lawyer Alan Levitt assumed Chamberlain was right; in any case, Kosloff declined the request, leaving Chamberlain livid and willing to jump to the rival ABA once his contract ended in 1967. Kosloff and Chamberlain worked out a truce, and later signed a one-year, $250,000 contract.