Search Results
| Date | Team | Acquired | Relinquished | Notes |
| 2017-07-14 | Celtics | • Demetrius Jackson | team exercised contract option | |
| 2017-07-14 | Celtics | • Gordon Hayward | signed unrestricted free agent to a 4-year, $128M contract | |
| 2017-07-15 | Celtics | • Demetrius Jackson | waived | |
| 2017-07-17 | Celtics | • Paul Pierce | signed free agent to a 1-day contract | |
| 2017-07-17 | Celtics | • Paul Pierce | retired | |
| 2017-07-17 | Celtics | • Paul Pierce | waived | |
| 2017-07-18 | Celtics | • Semi Ojeleye | signed second round pick to a 4-year contract | |
| 2017-07-19 | Celtics | • Aron Baynes | signed unrestricted free agent to a 1-year, $4.3M two way contract | |
| 2017-07-19 | Celtics | • Daniel Theis | signed free agent to a 2-year, $2.2M contract | |
| 2017-07-19 | Celtics | • Kadeem Allen | signed second round pick to a two way contract | |
| 2017-07-20 | Celtics | • Guerschon Yabusele | signed 2016 first round pick to a 2-year, $4.9M contract / 4-year contract | |
| 2017-07-31 | Celtics | • Shane Larkin | signed free agent to a 1-year contract | |
| 2017-08-11 | Celtics | • Jabari Bird | signed second round pick to a two way contract | |
| 2017-08-19 | Celtics | • Daniel Dixon | signed free agent | |
| 2017-08-22 | Celtics | • Kyrie Irving | • Isaiah Thomas • Jae Crowder • Ante Zizic • 2018 first round pick (#8-Collin Sexton) • 2020 second round pick (#50-Skylar Mays) |
trade with Cavaliers |
| 2017-08-28 | Celtics | • Andrew White III | signed free agent | |
| 2017-08-28 | Celtics | • L.J. Peak | signed free agent | |
| 2017-08-31 | Celtics | • Jabari Bird | signed second round pick to a two way contract | |
| 2017-09-05 | Celtics | • Jabari Bird | signed second round pick to a two way contract | |
| 2017-09-24 | Celtics | • Jonathan Holmes | signed free agent | |
| 2017-09-26 | Celtics | • Devin Williams | signed free agent | |
| 2017-10-05 | Celtics | • Devin Williams | waived | |
| 2017-10-07 | Celtics | • Daniel Dixon | signed free agent | |
| 2017-10-09 | Celtics | • Daniel Dixon | signed free agent | |
| 2017-10-12 | Celtics | • Andrew White III | waived |
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