The 21-year-old suffered the complaint during his side's 3-1 win over rivals PSV Eindhoven at the weekend.
However, despite initial concerns, a short statement on the club's official website has confirmed that the Pole could return to training before the end of the week.
Milik is currently on loan with Ajax from Bundesliga outfit Bayer Leverkusen.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | PSV EindhovenPSV | 17 | 15 | 0 | 2 | 59 | 13 | 46 | 45 |
| 2 | Ajax | 17 | 12 | 3 | 2 | 37 | 16 | 21 | 39 |
| 3 | FC UtrechtUtrecht | 17 | 11 | 3 | 3 | 34 | 28 | 6 | 36 |
| 4 | Feyenoord | 17 | 10 | 5 | 2 | 40 | 21 | 19 | 35 |
| 5 | AZ AlkmaarAZ | 17 | 10 | 2 | 5 | 31 | 17 | 14 | 32 |
| 6 | FC Twente | 17 | 9 | 4 | 4 | 32 | 21 | 11 | 31 |
| 7 | Go Ahead Eagles | 17 | 7 | 4 | 6 | 30 | 27 | 3 | 25 |
| 8 | Fortuna SittardSittard | 17 | 7 | 4 | 6 | 25 | 25 | 0 | 25 |
| 9 | Willem II | 17 | 6 | 4 | 7 | 21 | 19 | 2 | 22 |
| 10 | NAC BredaNAC Breda | 17 | 7 | 1 | 9 | 19 | 27 | -8 | 22 |
| 11 | Heerenveen | 17 | 6 | 3 | 8 | 17 | 31 | -14 | 21 |
| 12 | NECNijmegen | 17 | 5 | 2 | 10 | 23 | 24 | -1 | 17 |
| 13 | PEC Zwolle | 17 | 4 | 5 | 8 | 16 | 26 | -10 | 17 |
| 14 | Groningen | 16 | 4 | 4 | 8 | 14 | 26 | -12 | 16 |
| 15 | Heracles | 16 | 3 | 5 | 8 | 18 | 33 | -15 | 14 |
| 16 | Sparta RotterdamSparta | 17 | 2 | 6 | 9 | 14 | 26 | -12 | 12 |
| 17 | Almere CityAlmere City | 17 | 2 | 3 | 12 | 10 | 37 | -27 | 9 |
| 18 | RKC WaalwijkRKC Waalwijk | 17 | 1 | 4 | 12 | 18 | 41 | -23 | 7 |
| > Eredivisie Full Table | |||||||||
