The 18-year-old, who is currently on loan with Eredivisie side Vitesse, joined Chelsea from West Bromwich Albion in 2013.
The club announced that the winger, who captained the side to victory in the UEFA Under-19s Youth League last season, had penned a new deal this afternoon.
Brown, who made his senior team debut last season, has also won the FA Youth Cup since joining Chelsea.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| C | Manchester CityMan City | 37 | 28 | 5 | 4 | 94 | 32 | 62 | 89 |
| 2 | Arsenal | 37 | 25 | 6 | 6 | 83 | 43 | 40 | 81 |
| 3 | Newcastle UnitedNewcastle | 37 | 19 | 13 | 5 | 67 | 32 | 35 | 70 |
| 4 | Manchester UnitedMan Utd | 36 | 21 | 6 | 9 | 52 | 41 | 11 | 69 |
| 5 | Liverpool | 37 | 19 | 9 | 9 | 71 | 43 | 28 | 66 |
| 6 | Brighton & Hove AlbionBrighton | 37 | 18 | 8 | 11 | 71 | 51 | 20 | 62 |
| 7 | Aston Villa | 37 | 17 | 7 | 13 | 49 | 45 | 4 | 58 |
| 8 | Tottenham HotspurSpurs | 37 | 17 | 6 | 14 | 66 | 62 | 4 | 57 |
| 9 | Brentford | 37 | 14 | 14 | 9 | 57 | 46 | 11 | 56 |
| 10 | Fulham | 37 | 15 | 7 | 15 | 54 | 51 | 3 | 52 |
| 11 | Crystal Palace | 37 | 11 | 11 | 15 | 39 | 48 | -9 | 44 |
| 12 | Chelsea | 36 | 11 | 10 | 15 | 36 | 42 | -6 | 43 |
| 13 | Wolverhampton WanderersWolves | 37 | 11 | 8 | 18 | 31 | 53 | -22 | 41 |
| 14 | West Ham UnitedWest Ham | 37 | 11 | 7 | 19 | 41 | 53 | -12 | 40 |
| 15 | Bournemouth | 37 | 11 | 6 | 20 | 37 | 70 | -33 | 39 |
| 16 | Nottingham ForestNott'm Forest | 37 | 9 | 10 | 18 | 37 | 67 | -30 | 37 |
| 17 | Everton | 37 | 7 | 12 | 18 | 33 | 57 | -24 | 33 |
| 18 | Leicester CityLeicester | 37 | 8 | 7 | 22 | 49 | 67 | -18 | 31 |
| 19 | Leeds UnitedLeeds | 37 | 7 | 10 | 20 | 47 | 74 | -27 | 31 |
| R | Southampton | 37 | 6 | 6 | 25 | 32 | 69 | -37 | 24 |
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