The Dallas Mavericks are in advanced discussions on a trade that would send former second-round pick Nick Calathes to the Memphis Grizzlies for future draft considerations, according to sources with knowledge of the deal.

The Mavericks acknowledged in recent weeks that they were likely to deal Calathes -- their 2009 second-round pick who spent the past four seasons playing overseas -- if a deal was struck to sign Israeli point guard Gal Mekel.

Sources told ESPN.com that Dallas has since been in discussions with multiple teams on a Calathes trade, but is now on the verge of sending the pass-first point guard to the Grizzlies after Calathes established himself as one of the best floor generals in Europe last season.

The 6-foot-6 point guard, now 24, visited Dallas in June to meet with team officials and audition for Mavs coach Rick Carlisle. But Dallas opted to offer a three-year guaranteed deal at the league minimum to Mekel, who then turned in a strong summer league performance running the team under Mavs assistant Monte Mathis.