For ten seasons, Jaylen Brown was as synonymous with the Boston Celtics as the parquet floor itself. A 2024 Finals MVP, a five-time All-Star, and the No. 3 overall pick out of California, Berkeley in the 2016 draft, Brown seemed like a fixture in green for years to come. Then, in a stunning July move, Boston shipped him to the Philadelphia 76ers for Paul George, two first-round picks, and two second-round picks.[^1]
The basketball world reacted with near-universal confusion. Trade grades ranged from "baffling" to outright "F," and one columnist called it "one of the worst trades in the history of the Celtics."[^6] So what actually happened? Four competing theories have emerged.
The Setup: A Leaked Offer for Giannis
Before any of this played out, Brown found out his own front office was shopping him. Weeks before the trade with Philadelphia, Boston reportedly offered Brown and two first-round picks to Milwaukee in an attempt to land Giannis Antetokounmpo, before the Bucks star was ultimately dealt to Miami instead.[^7] The offer leaked, and the fallout was immediate — commentator Bill Simmons reported that Brown began "acting like he's done in Boston" once he learned the front office had put him on the table.[^7]
That leak set the stage for everything that followed. By the time the Philadelphia deal was announced, the relationship between Brown and the organization had already cracked.
Theory One: The Tatum Question Finally Got Answered
The most persistent storyline in Boston for years has centered on whether Jayson Tatum, a Duke product and the No. 3 pick in 2017, and Brown could really coexist as co-stars. A 2024 championship quieted the noise for a while. But this past season, with Tatum sidelined for most of the year recovering from an Achilles tear, Brown stepped into the No. 1 role and thrived — averaging a career-high 28.7 points, 6.9 rebounds, and 5.1 assists per game on 47.7/34.7/79.5 shooting splits.[^1]
Brown didn't stay quiet about how much he enjoyed it. On his Twitch stream after the season, he called it his "favorite year" in the league — then doubled down when asked to clarify, saying, "I wouldn't say by far. By far would be a stretch because obviously winning the championship is great. But I'm telling y'all, this was my favorite season."[^7] For a team that just won a title two years earlier, that's a loaded thing for a star to say about a season Boston lost in the first round.
Theory Two: The Math Simply Didn't Work
Set the personalities aside, Brown had three years left on his current deal and was eligible for a supermax extension projected at roughly $70 million per year — a five-year commitment in total. George, by contrast, has only two years left on his contract, with the second a player option.[^2] In the NBA's new second-apron world, carrying two stars who each eat up around 35% of the cap creates brutal roster-building constraints.[^4]
Here's how the two contracts compare:
| Jaylen Brown | Paul George | |
|---|---|---|
| Years remaining | 3 (plus extension eligibility) | 2 (2nd year is a player option) |
| 2026-27 salary | $57.1 million | $51.7 million |
| Projected extension | ~$70 million/year (5-year supermax) | N/A |
| Age entering 2026-27 | 29 | 36 |
Source: Yahoo Sports contract breakdown.[^4]
The theory is that rather than commit five more years of max-level money to Brown, Boston took on a shorter, cheaper (if older) contract and picked up draft capital in the process.
Theory Three: Off-Court Noise Became a Distraction
A third read points to friction that had nothing to do with basketball. This offseason, Brown was outspoken on his Twitch stream about NBA officiating, feuded publicly with several media figures, and called ESPN "unethical."[^3] He also called out 76ers star Joel Embiid for flopping during Boston's first-round playoff loss — commentary that reads a little differently now that Brown is walking into Embiid's locker room.[^1] For an organization that has prided itself on a buttoned-up culture under Brad Stevens, some of that noise may simply have worn thin.
Theory Four: Ownership Pressure (The Speculative One)
The most contested theory ties the trade to Boston's new ownership group, led by Bill Chisholm and backed by private equity firm Sixth Street Partners. One Boston radio outlet argued that the ownership structure needed additional outside investment to finalize the sale, and that shedding Brown's long-term supermax obligation — potentially saving upward of $140 million by 2029 — may have been less a basketball decision than a financial one.[^5] This is a more speculative theory than the others but it's gained traction precisely because so many analysts can't otherwise explain the relatively light return Boston accepted for this former Finals MVP.
What It Means for Philadelphia
Whatever the real reason, the basketball fit in Philadelphia is the more interesting question going forward. Brown joins a core of Embiid, Tyrese Maxey, and VJ Edgecombe, giving the 76ers a second high-usage wing scorer and instant shot creation. Analysts have been quick to hand Philadelphia the early win in the trade, with one outlet grading the Sixers an "A+" for landing a former Finals MVP for what amounted to an aging George and modest draft compensation.[^6] The counterpoint: at least one data-driven observer noted that "no player in the NBA lowers the points that his teammates score, while on the court with him, more than Jaylen Brown."[^4] Philadelphia is betting that pairing him with table-setters like Maxey solves that problem rather than amplifies it.
What It Means for Boston
For the Celtics, the outlook is murkier. They retain Tatum as the unquestioned centerpiece, add draft capital in the 2028 and 2031 first-round picks, and shed a chunk of long-term salary exposure. But the more pointed criticism is that Boston traded a 29-year-old All-NBA-caliber wing for a 36-year-old with an extensive recent injury history and only two years left on his own deal — hardly the profile of "the best asset available" in a marketplace with this much star movement. Whether the picks turn into anything meaningful is years away from being known, and in the meantime, Boston heads into next season with a very different supporting cast around Tatum than it had when it hoisted a championship trophy just two years ago.
The full picture likely involves pieces of all four theories rather than one clean explanation. What's certain is that the "Jayson and Jaylen" era in Boston is over, and both franchises now have to prove their side of the trade was the right call.
Sources
[^1]: How did Celtics, Jaylen Brown get here? Trade to 76ers caps off stunning deterioration of relationship — CBS Sports [^2]: NHL/NBA contract breakdown — Yahoo Sports: Did the Celtics give away Jaylen Brown? [^3]: Celtics undergoing confusing revamp with Jaylen Brown trade — Yardbarker [^4]: Did the Celtics give away Jaylen Brown? Why 'analytics' don't see Philly's new star as elite of elite — Yahoo Sports [^5]: Who forced the Jaylen Brown trade? — 98.5 The Sports Hub [^6]: Jaylen Brown trade grades: 76ers get 'A+' for landing Celtics star as Boston makes baffling decision — CBS Sports [^7]: Why Celtics traded Jaylen Brown to 76ers for Paul George — Yahoo Sports [^8]: Brad Stevens owes Celtics fans answers after disastrous Jaylen Brown trade — Chowder and Champions