This is a list of all personnel changes for the 2017 EuroLeague off-season and 2017–18 EuroLeague season (until 28 February 2018).
The following players who played in the 2016–17 Euroleague, and played more than three EuroLeague seasons, retired.
| Date | Name | EuroLeague Team(s) and played (years) | Age | Notes | Ref. | |
|---|---|---|---|---|---|---|
| June 8 |
| 37 | [1] | |||
| August 2 |
| 36 | [2] | |||
| September 27 |
| 34 | [3] |
| Team | Outgoing manager | Manner of departure | Date of vacancy | Position in table | Replaced with | Date of appointment |
|---|---|---|---|---|---|---|
 FC Barcelona Lassa | Sacked | 7 June 2017[4] | Pre-season | 16 June 2017[5] | ||
| Baskonia | Mutual consent | 16 June 2017[6] | 16 June 2017[7] | |||
| Valencia Basket | End of contract | 20 June 2017[8] | 20 June 2017[9] | |||
 Maccabi Tel Aviv | Sacked | 16 May 2017[10] | 26 June 2017[11] | |||
 EA7 Emporio Armani Milan | Mutual consent | 3 June 2017[12] | 26 June 2017[13] | |||
 Khimki | Mutual consent | 29 June 2017[14] | 30 June 2017[15] | |||
 Crvena zvezda mts | End of contract | 15 July 2017[16] | 21 July 2017[17] | |||
| Baskonia | Resigned | 25 October 2017[18] | 16th (0–3) | 27 October 2017[19] | ||
 Anadolu Efes | Sacked | 16 December 2017[20] | 15th (3–9) | 18 December 2017[21] | ||
| Sacked | 4 February 2018[22] | 13th (7–14) | 9 February 2018[23] | |||
| Sacked | 19 February 2018[24] | 13th (8–14) | 4 March 2018[25] | |||
| width=100 | Date | width=190 | Player | From | To | Contract years | Ref. |
|---|---|---|---|---|---|---|---|
| From youth team | |||||||
| width=100 | Date | width=190 | Player | From | To | Ref. |
|---|---|---|---|---|---|---|
| Crvena zvezda | ||||||
| Anadolu Efes | ||||||
| Maccabi Tel Aviv | ||||||
| Baskonia | ||||||
| Unicaja | ||||||
| AX Olimpia Milan | ||||||
| AX Olimpia Milan | ||||||
| Barcelona | ||||||
| Panathinaikos | ||||||
| AX Olimpia Milan | ||||||