Celtics sign Demetrius Jackson to a 4-year, $5.5 Million deal

The Celtics are set to sign point guard rookie; Demetrius Jackson to a four-year, $5.5 million contract, according to ESPN.

Celtics to sign Gerald Green, extend Tyler Zeller's contract

With not a lot of players to choose from left in free agency, the Celtics decided to bring back an old friend and re-signed one of their own to add depth to the front court of their roster.

Jae Crowder on Kevin Durant joining the Warriors: 'It was a slap in the face for us'

Jae Crowder isn't impressed with Kevin Durant's decision to sign with the Golden State Warriors.

Before speaking at the 60 Days of Summer event in Springfield, the Celtics forward expressed his frustration with Durant's choice and revealed what turned out to be one of the Celtics' biggest selling points. 

Guerschon Yabusele expected to sign 1-Year deal with Shanghai

Celtics' first round pick Guerschon Yabusele has agreed to sign a one-year deal with the Shanghai Sharks of the Chinese Basketball Association, according to Boston Globe's Adam Himmelsbach.

5 Things we learned from Celtics Summer League

After finishing the Utah Summer League with a perfect 4-0 record, the Celtics were bounced out of the first round of the Las Vegas league playoffs and closed out their Vegas schedule, 1-4.

But instead of looking at a team's record at the end of Summer League, we're going to focus on how these young players looked individually. There's plenty to say about this young Celtics roster -- here are five of the biggest takeaways from Celtics Summer League:

The Vertical's Chris Mannix expects Celtics to acquire Bulls guard Jimmy Butler or 76ers forward Jahlil Okafor

Russell Westbrook or Blake Griffin?

The Vertical's Chris Mannix is not buying it.

Report: Celtics involved in a potential Three-Team Deal for Blake Griffin

After yesterday's report indicating the Celtics as the most likely destination for Thunder guard Russell Westbrook, Boston is reportedly involved in a three-team swap that would land them Clippers forward Blake Griffin.

Celtics Summer League: Jaylen Brown is attacking the rim successfully, jump shot is struggling

Celtics rookie Jaylen Brown has impressively demonstrated his strongest qualities as a basketball player -- proving to fans why the Celtics selected him at No. 3 in this summer's NBA Draft.

Report: Celtics considered 'most likely destination' for Russell Westbrook

The Oklahoma City Thunder have reportedly placed All-Star guard Russell Westbrook on the trading block in hopes of trading him before the start of the season.

Jared Sullinger agrees to 1-Year deal with Toronto Raptors

After the Celtics rescinded their qualifying offer for free agent Jared Sullinger over the weekend -- the writing was on the wall for Sullinger's future in Boston.

CWS Podcast - Welcome Al Horford

As the Kevin Durant dust has settled in Boston, we discuss the arrival of Al Horford to the Celtics, and what's next for Danny Ainge. Plus we're talking about potential trade options to strengthen the C's roster and take a trip around the league in NBA Free Agency thus far. Take a listen to the Causeway Street Podcast below:

Celtics Offseason...so far

After a wild opening week to free agency for the Celtics and the NBA, the dust has collectively started to settle on what the 2016-17 season should look like. The Celtics were as busy as any franchise and made as many headlines as their rival Eastern Conference foes and perhaps even surpassed a few. Boston was able to secure a highly anticipated meeting with 2016 free agent darling Kevin Durant and ultimately finalized a 4-year, $113 million dollar deal with former Atlanta Hawks big man Al Horford.

Celtics Summer League: Terry Rozier's game winning 3-pointer push C's past Spurs

After blowing a 15-point first half lead, Terry Rozier was determined to push his team to a perfect 3-0 summer league record by scoring seven consecutive points in the final minute -- leading the Celtics to a 87-86 win against the Spurs. 

Sullinger Tweet Sets Off Mass Speculation

The Celtics have a very tough decision when it comes to Jared Sullinger. They have extended a qualifying offer to the Sullinger making him a restricted free agent.

The one year extension was offered for $4.4 million has not been signed but there also have been no reports of teams signing the Celtics big man to an offer sheet.

Should the Celtics Make A Play For RusselI Westbrook?

The Celtics missed out on the Kevin Durant Sweepstakes, yet they still may not be out of the running to acquire a OKC Thunder superstar.

Durant's former running mate, Russell Westbrook is up to be a free agent next summer. The Thunder  flat out can't let both Durant and Westbrook leave in free agency and be left with nothing in return. They may be forced to trade Russell Westbrook this year if they can't convince him to sign an extension, which by all accounts, isn't happening in OKC.

Celtics Summer League: James Young, Guerschon Yabusele lead C's over Jazz

The Celtics improved to 2-0 in summer league play after defeating the Utah Jazz, 89-82 Tuesday night in Utah.

Jaylen Brown out with Knee Injury

Celtics No. 3 pick Jaylen Brown suffered a knee injury on Monday against the 76ers and has been ruled out for his game against the Utah Jazz on Tuesday.

Celtics Summer League: Jaylen Brown shines in debut against No. 1 pick Ben Simmons

All eyes were on the 76ers' No. 1 overall pick Ben Simmons and the Celtics' No. 3 pick Jaylen Brown in their summer league debut on Monday.

Kevin Durant to sign with Warriors

At the end of the day, not even Tom Brady or David Ortiz could convince Kevin Durant to sign with the Celtics.

CWS Podcast - NBA Free Agents

NBA Free Agency is well underway, and the Celtics have yet to sign anyone yet. We discuss what has been put on the table with Al Horford, plus talk about what's next if Kevin Durant decides not to come to Boston. We have guest Zach Peloquin [@ZapSports508] chime in on all the crazy deals around the league and his take on the NBA Draft as well. Take a listen below to the Causeway Street Podcast

Celtics Sign Al Horford To $113 Million Deal

The Celtics and Danny Ainge were finally able to reel in the big fish on the free agent market, by signing perennial All-Star forward Al Horford to a max free agent contract on Saturday.

This is by far the biggest free agent signing in the history of the Boston Celtics. Horford took advantage of the Celtics' deep pockets this summer and inked a four-year deal worth over $113 million.

Making It Rain - NBA Dishes Out Record $$ In Day One Of Free Agency

It was common knowledge around the NBA that teams would have a lot more money to spend due to the salary cap going up by nearly $20 million. No one thought it would be this crazy though.

Day one of free agency is over and the numbers are staggering.  17 teams shelled out over  $1.6 Billion (you read that right, BILLION, with a B) in guaranteed contracts to 27 players. Oh, and did I mention the two biggest names on the market in Kevin Durant and Lebron James haven't even signed yet.