Sneijder, who originally joined from Inter in 2013, has agreed to extend his stay in Turkey until the end of the 2017-18 season.
The club has also announced that a signing ceremony with Sneijder will take place on Sunday at the Turk Telekom Arena Stadium.
The Netherlands international has previously been a target for both Manchester United and Paris Saint-Germain.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | GalatasarayGalatasaray | 34 | 30 | 3 | 1 | 80 | 21 | 59 | 93 |
| 2 | Fenerbahce | 34 | 28 | 5 | 1 | 89 | 31 | 58 | 89 |
| 3 | TrabzonsporTrabzonspor | 35 | 18 | 4 | 13 | 61 | 48 | 13 | 58 |
| 4 | BesiktasBesiktas | 35 | 16 | 6 | 13 | 48 | 42 | 6 | 54 |
| 5 | Istanbul BasaksehirIstanbul | 34 | 15 | 7 | 12 | 46 | 39 | 7 | 52 |
| 6 | AlanyasporAlanyaspor | 35 | 12 | 13 | 10 | 50 | 47 | 3 | 49 |
| 7 | KasimpasaKasimpasa | 34 | 14 | 7 | 13 | 56 | 59 | -3 | 49 |
| 8 | Caykur RizesporCaykur Rizespor | 35 | 14 | 7 | 14 | 47 | 54 | -7 | 49 |
| 9 | SivassporSivasspor | 34 | 12 | 12 | 10 | 41 | 45 | -4 | 48 |
| 10 | AntalyasporAntalyaspor | 34 | 11 | 12 | 11 | 39 | 42 | -3 | 45 |
| 11 | Adana Demirspor | 35 | 10 | 14 | 11 | 50 | 47 | 3 | 44 |
| 12 | Samsunspor | 35 | 11 | 9 | 15 | 40 | 45 | -5 | 42 |
| 13 | KayserisporKayserispor | 35 | 11 | 11 | 13 | 41 | 50 | -9 | 41 |
| 14 | AnkaragucuAnkaragucu | 35 | 8 | 15 | 12 | 43 | 46 | -3 | 39 |
| 15 | Fatih KaragumrukKaragumruk | 35 | 9 | 10 | 16 | 43 | 45 | -2 | 37 |
| 16 | KonyasporKonyaspor | 34 | 8 | 12 | 14 | 34 | 48 | -14 | 36 |
| 17 | GaziantepGaziantep | 34 | 9 | 7 | 18 | 39 | 54 | -15 | 34 |
| 18 | Hatayspor | 34 | 7 | 12 | 15 | 38 | 48 | -10 | 33 |
| 19 | Pendikspor | 34 | 7 | 9 | 18 | 38 | 70 | -32 | 30 |
| R | Istanbulspor | 35 | 4 | 7 | 24 | 26 | 68 | -42 | 16 |
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