Zach Randolph and the Memphis Grizzlies have hit an impasse in discussions on a contract extension and he's seriously considering using his early termination option to become a free agent.

Raymond Brothers, Randolph's agent, has been talks with Chris Wallace for several weeks.

Memphis has held firm on a three-year extension, but Randolph has preferred the security of four years, league sources said.

Randolph is an extremely popular player in Memphis and has expressed a desire to retire with the franchise.