Celtics Sign Ron Harper Jr. to Four‑Year $13.7M Deal

Despite the contract’s financial specifics remaining undisclosed, the Boston Celtics officially announced the signing of Ron Harper Jr. on Monday, July 6. The move adds a versatile guard who has already logged time with Toronto, Detroit and this past season with Boston. Harper Jr.’s addition gives Boston another wing talent who averages around 4 points per game while swelling roster depth.

Contract Details

Ron Harper Jr.’s new pact is a four‑year agreement valued at $13.7 million. The deal guarantees the first two years in full, while the third year carries a non‑guaranteed salary and the fourth year includes a team option that can be declined. Approximately $6.5 million of the total is secured immediately, placing his earnings well above the league minimum. USA TODAY reporter Mike Scotto broke down the structure, noting the financial safety net for the young guard.

Harper Jr. progressed through Boston’s intentional roster building process in 2025. He signed an Exhibit 10 contract on September 19, moved to a two‑way deal on October 16, and earned a standard NBA contract on April 4. The quick rise from a summer‑league participant to a guaranteed NBA contract underscores his professional trajectory and the Celtics’ confidence in his potential.

Celtics Journey & Recent Stats

During the most recent Celtics season, Harper appeared in 29 games with three starts, averaging 4.2 points, 1.7 rebounds and 11.0 minutes per contest. His role as a bench contributor aligns with Boston’s need for depth in the guard position. The New Jersey native has totaled 40 NBA games (3 starts) across four seasons, splitting time with the Toronto Raptors (2022‑24), Detroit Pistons (2024‑25) and the Celtics (2025‑26). In those stints his per‑game averages sit at 3.7 points, 1.6 rebounds and 9.7 minutes.

College Career

Harper’s college tenure at Rutgers spanned four seasons from 2018‑2022. He logged 121 games, starting 109, and posted averages of 12.6 points, 5.1 rebounds and 1.4 assists per game. As a senior, he led the team with 15.7 points per contest and drilled a career‑best 39.8 percent from three‑point range, earning All‑Big Ten Second Team honors.

After going undrafted in the 2022 NBA Draft, Harper began his professional path overseas before carving out a role in the league’s short‑term contracts. His undrafted status highlights the risk the Celtics are willing to take, banking on his college production and developing skill set.

What This Means for Boston

Adding Ron Harper Jr. gives the Celtics depth without consuming a sizable chunk of the salary cap, thanks to the guaranteed structure. His experience across three franchises provides a broad perspective that can be valuable in the locker room and on the court. While his statistical impact remains modest, the signing signals Boston’s focus on building a flexible, multi‑dimensional roster for a deep playoff run.