Gorgui Dieng, Hawks agree to terms for one-year deal

102715 ATLANTA: -- A new Hawks logo is painted on the tunnel wall leading out to the court for the first regular season basketball game "home opener" on Tuesday, Oct. 27, 2015, in Atlanta.  Curtis Compton / ccompton@ajc.com

Credit: ccompton@ajc.com

Credit: ccompton@ajc.com

102715 ATLANTA: -- A new Hawks logo is painted on the tunnel wall leading out to the court for the first regular season basketball game "home opener" on Tuesday, Oct. 27, 2015, in Atlanta. Curtis Compton / ccompton@ajc.com

The Hawks and Gorgui Dieng have agreed to terms for a one-year, $4 million deal, according to a person familiar with the situation.

Dieng (6-foot-11, 252) averaged 6.8 points and 3.7 rebounds in 38 games with the Grizzlies and Spurs last season. The move meets a need for the Hawks, as backup center Onyeka Okongwu will miss six months after recently undergoing surgery to repair a torn labrum. The Hawks needed to add size and someone who can act as a backup in the frontcourt, namely behind center Clint Capela.

NBA teams began negotiating with free agents at 6 p.m. Monday, though deals can’t be made official until 12:01 p.m. Friday.

The Athletic first reported the deal.