Plumlee signed a one-year contract Wednesday with the Perth Wildcats of the Australian National Basketball League.
Plumlee was waived by the Grizzlies on Saturday.
Plumlee (knee), along with Solomon Hill, has been traded to the Grizzlies in exchange for Chandler Parsons, Adrian Wojnarowski of ESPN reports.
Plumlee will undergo arthroscopic surgery on his injured left knee and be sidelined for the rest of the season, Chris Vivlamore of The Atlanta Journal-Constitution reports.
Plumlee (knee) will remain out Tuesday against the Pelicans.
Plumlee (knee) is out Thursday against the Jazz.
Plumlee (knee) has been ruled out of Sunday's game against the Magic.
Plumlee (knee) is out Saturday against the Celtics, Kevin Chouinard of the Hawks' official site reports.
Plumlee (knee) has progressed to 1-on-1 contact work, Chris Vivlamore of The Atlanta Journal-Constitution reports.
Plumlee (knee) has been ruled out for Wednesday's game against the Spurs, Chris Vivlamore of The Atlanta Journal-Constitution reports.