The Boston Celtics are set to sign veteran center Jason Collins to a one-year, veteran-minimum deal, according to league sources.

With restricted free-agent center Greg Stiemsma prepared to sign an offer sheet with the Minnesota Timberwolves — one the Celtics appear unable to match due to salary-cap constraints — Boston has moved quickly to add a legitimate 7-footer to their frontcourt rotation.

The 33-year-old Collins, a veteran of 11 NBA seasons, gives Boston a defensive-minded big man who can give quality minutes off the bench. Collins’ offensive game is much-maligned and, for his career, he’s averaged 3.8 points and 3.9 rebounds per game. In 30 regular-season games with the Hawks last season, he scored a mere 39 points, but was a pest against the Celtics in the teams’ first-round series because of his defense (and occasional offensive burst).

via Chris Forsberg of ESPN Boston