Source: Babb to sign for rest of season

The Boston Celtics will sign rookie swingman Chris Babb for the remainder of the 2013-14 season on Friday, according to a team source.

Babb, whose second 10-day contract was set to expire on Thursday, traveled with the team to New York in advance of Friday’s game against the Brooklyn Nets and will ink a multiyear deal.

That pact should keep Babb with the Celtics through the summer -- though with future seasons expected to be nonguaranteed, it could make Babb a trade chip depending on Boston’s offseason activity -- and give him a chance to compete again for a roster spot in training camp.

Babb logged his fourth consecutive DNP on Wednesday night against the Miami Heat, but had the support of head coach Brad Stevens.

“I love having him around,” said Stevens. “I think he’s great. He’s an unbelievable teammate. And I think when he’s played, he’s given us good minutes.”

In six appearances since being signed from the Maine Red Claws of the D-League earlier this month, Babb has averaged 2.2 points, 1.3 rebounds and 11.5 minutes per game.

Babb is the second player plucked from the D-League to earn a rest-of-the-season deal with Boston. Chris Johnson did the same earlier this season. The Celtics now have multiple nonguaranteed deals to aid their offseason pursuits.

With only 27 days remaining in the 2013-14 season, Babb’s deal will cost Boston only $78,000 for the remainder of the season (paired with his two 10-day deals, he’ll earn roughly $135,000 for his rookie stay with Boston). The Celtics were roughly $750,000 from the luxury tax line before the deal and -- accounting for the increased luxury tax calculation given Babb’s rookie status -- Boston appears to still have about $600,000 under the line (depending on performance incentives).

The Celtics are now at the 15-man roster limit.