The 18-year-old Frenchman, who had been linked with a move to Everton, has committed his future at the San Siro until 2017.
"I am delighted to have agreed to prolong my career with such a great club like Milan," said Niang.
"Everton were interested in me, that pleased me, but my desire was always to stay here and play here."
Niang joined Milan from French club Caen over the summer.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Inter Milan | 33 | 27 | 5 | 1 | 79 | 18 | 61 | 86 |
| 2 | AC Milan | 33 | 21 | 6 | 6 | 64 | 39 | 25 | 69 |
| 3 | Juventus | 33 | 18 | 10 | 5 | 47 | 26 | 21 | 64 |
| 4 | Bologna | 33 | 17 | 11 | 5 | 48 | 26 | 22 | 62 |
| 5 | Roma | 33 | 17 | 7 | 9 | 59 | 39 | 20 | 58 |
| 6 | Atalanta BCAtalanta | 32 | 16 | 6 | 10 | 59 | 37 | 22 | 54 |
| 7 | Lazio | 33 | 16 | 4 | 13 | 42 | 35 | 7 | 52 |
| 8 | Napoli | 33 | 13 | 10 | 10 | 50 | 41 | 9 | 49 |
| 9 | Fiorentina | 32 | 13 | 8 | 11 | 45 | 36 | 9 | 47 |
| 10 | Torino | 33 | 11 | 13 | 9 | 31 | 29 | 2 | 46 |
| 11 | Monza | 33 | 11 | 10 | 12 | 35 | 43 | -8 | 43 |
| 12 | Genoa | 33 | 9 | 12 | 12 | 35 | 40 | -5 | 39 |
| 13 | Lecce | 33 | 8 | 11 | 14 | 30 | 48 | -18 | 35 |
| 14 | CagliariCagliari | 33 | 7 | 11 | 15 | 36 | 56 | -20 | 32 |
| 15 | Hellas VeronaHellas Verona | 33 | 7 | 10 | 16 | 31 | 44 | -13 | 31 |
| 16 | Empoli | 33 | 8 | 7 | 18 | 26 | 48 | -22 | 31 |
| 17 | Udinese | 33 | 4 | 16 | 13 | 31 | 50 | -19 | 28 |
| 18 | FrosinoneFrosinone | 33 | 6 | 10 | 17 | 40 | 63 | -23 | 28 |
| 19 | SassuoloSassuolo | 33 | 6 | 8 | 19 | 39 | 65 | -26 | 26 |
| 20 | Salernitana | 33 | 2 | 9 | 22 | 26 | 70 | -44 | 15 |
| > Serie A Full Table | |||||||||
