Celtics are in final discussions on terms of a multi-year deal with Mavericks free agent guard Jason Terry, sources tells Yahoo! Sports.

— Marc J. Spears (@SpearsNBAYahoo) July 3, 2012

Keep in mind Celtics coach Doc Rivers said he wanted both Ray Allen & Jason Terry in this recent Yahoo! Sports story: yhoo.it/N6SaOF

— Marc J. Spears (@SpearsNBAYahoo) July 3, 2012

Details forthcoming, but it looks like The Jet will be a Celtic. As Marc Spears prefaces, it doesn't preclude Ray Allen returning to Boston; it's been Danny's plan to bring them both in all along, with Jason Terry taking the full MLE. Red Auerbach is generally credited with creating the sixth man; could Doc employ three next season with Terry, Allen, and Green? Excited yet?

UPDATE:

Jason Terry expected to land a three-year deal paying the mid-level exception from the Celtics, sources told Yahoo!

— Marc J. Spears (@SpearsNBAYahoo) July 3, 2012

As expected, it's the full MLE for three years. That might be one year too many of the Heat killer, but for a team that lacked bench scoring last season, it's a huge get.

But source stresses that Terry will go back to Mavs to give them chance to counter before finalizing three-year deal, believed to be at MLE

— Marc Stein (@ESPNSteinLine) July 3, 2012

...but he's giving Cuban the chance to match. Uh oh.

UPDATE:

Celtics reach deal with Jason Terry

The Boston Celtics have reached agreement with Dallas Mavericks free-agent guard Jason Terry on a three-year contract, league sources told Yahoo! Sports.

The Celtics will use their $5 million midlevel exception to sign Terry. The total value of the contract will be worth more than $15 million.

Marc Spears is reporting that the deal has already been closed without the Mavericks matching.

UPDATE:

Jason Terry likely to end up with Boston - Chris Tomasson - Fox Sports Florida

The free-agent guard said in a phone interview with FOX Sports Florida on Tuesday afternoon there’s a “strong possibility’’ he will agree by Tuesday night to sign a three-year, $15.675 million deal with Boston. However, he said he wants to give the Mavericks, whom he played for from 2004 until this past season, one final chance to make an offer to keep him.

“I want to see what they come up with, but I’m not optimistic,’’ said Terry, who said he didn’t want to talk about leaving the Mavericks, the team he helped to an NBA title in 2011, until it might be final.