Amari Williams Returns to Great Britain After 7 Years as Celtics Deal Fuels EuroBasket 2029 Push

Amari Williams Confirmed for Great Britain's EuroBasket 2029 Squad After Seven Years Away

Amari Williams is officially back in a Great Britain jersey. Basketball England and FIBA have both confirmed the Boston Celtics big man in the squad for the EuroBasket 2029 Pre-Qualifiers, marking his first senior national team appearance in seven years.

Williams had previously represented Great Britain only at youth level under-16, under-18, and under-20 before stepping away from national duty entirely. His return came in GB's opening pre-qualifying window against Switzerland, where he started at center and helped the team to a 110-75 win, logging 8 points, 7 rebounds, and 2 assists in roughly 19 minutes.

There's no confirmation yet on how the rest of the pre-qualifying roster will shape up beyond this window, so for now the headline is simple: Williams is in, he started, and he produced in his first meaningful senior minutes for GB.

Why Now? Williams' G League Breakout and New Celtics Deal Made the Call-Up Make Sense

This call-up isn't happening in a vacuum. Williams has spent the past year building a resume that made him impossible for national team decision-makers to ignore. In 2025-26 with Maine, he averaged 12.1 points, 11.2 rebounds, 5.3 assists, and 1.7 blocks over 9 games on 60.3% shooting the kind of two-way big man production that translates across levels.

Zoom out to his broader G League sample and the numbers get even more eye-catching: 15.8 points, 10.8 rebounds, 4.9 assists, and 1.7 blocks across 28 games, with 305 total rebounds and 49 blocks despite playing fewer minutes than most rotation regulars at that level.

Then came the 2026 Summer League, where Williams opened with a statement performance against Toronto 23 points and 13 rebounds with 2 assists and 2 blocks. He closed out the four-game stretch averaging 6.2 points, 5.0 rebounds, and 1.8 assists on 44.4% shooting.

That production translated into a tangible NBA payoff. Boston signed Williams to a two-year, $2.7 million standard contract back in February 2026, with $490,128 guaranteed and the second year set to become fully guaranteed by January 2027 if the Celtics kept him. The team later moved him to a two-way deal in July 2026 after declining that team option a routine roster maneuver, not a signal of declining stock, given the résumé he was building at the same time.

What Williams' Return Really Signals for Great Britain's EuroBasket 2029 Plans

The call-up itself doesn't lock Williams into a starting role or a defined function for the tournament cycle head coach Marc Steutel is clearly using this pre-qualifying window to test size and NBA-caliber experience, bringing Williams in alongside other debutants like Tosan Evbuomwan and Tobi Lawal.

What his debut against Switzerland does suggest is a lane: a physical, rim-protecting, rebounding-oriented center who can anchor an interior rotation. Starting at the five and contributing across the stat sheet in under 20 minutes is a promising first data point, but it's one game in a multi-year qualifying process.

The real test isn't this window it's whether the same rebounding instincts and passing feel that made him a G League standout and earned him a Celtics roster spot can show up consistently against senior international competition, where spacing, physicality, and scouting are all a notch higher than Summer League or the G League. EuroBasket 2029 is still years away, but Great Britain now has a data point worth tracking as it builds toward that qualification window.