While a majority of NBA teams have gone into hibernation before the start of training camp in October the Memphis Grizzlies continue to make moves.

The Griz are working to acquire center Fab Melo from the Boston Celtics for the rights to Donte Greene according to a source with knowledge of the deal.

Memphis would bolster its frontcourt depth adding a third center to the roster behind starter Marc Gasol and backup Kosta Koufos.

Salaries in the transaction were essentially equal.

Melo still is playing on a rookie contract that pays him $1.3 million this season. Greene’s contract of slightly more than $1 million is nonguaranteed meaning he must earn a roster spot in October during training camp.

In essence the Griz get a year to evaluate Melo for the future because they own a team option for the 2014-15 season.