Celtics Convert Devin Carter to Two-Way Deal, but Mononucleosis Delays His Start

The Boston Celtics are keeping former lottery pick Devin Carter in their development pipeline, converting the 24-year-old guard to a two-way contract Sunday. Carter, selected 13th overall by Sacramento in the 2024 NBA Draft, earned the opportunity after making a strong impression during Boston’s preseason. The move gives the Celtics a low-risk chance to develop a young guard who already owns meaningful NBA experience.

Carter appeared in 38 games with Sacramento last season, averaging 8.9 points, 3.3 rebounds and 2.7 assists. He also has been highly productive in limited NBA G League action, averaging 24.9 points, 8.7 rebounds, 4.7 assists and 1.9 steals across 10 career games. His defensive activity and athleticism give Boston another developmental option who could eventually contribute beyond the G League.

There is one immediate complication: Carter has been diagnosed with mononucleosis and is expected to be sidelined while he recovers. That delays what otherwise looked like an opportunity to build on his preseason momentum. For Boston, however, the two-way conversion is a longer-term bet rather than an opening-night decision. Once healthy, Carter can split time between the Celtics and Maine while trying to turn a former first-round pedigree into a permanent NBA role.