The Belgian club said they had engaged in cursory talks with the Stamford Bridge side last month over a possible switch.
It is unclear how much the Blues have offered for the Belgian international.
Both Tottenham Hotspur and Manchester City have been linked with the forward, who has scored 31 goals in 71 games for his club.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Liverpool | 5 | 4 | 0 | 1 | 10 | 1 | 9 | 12 |
| 2 | Manchester CityMan City | 4 | 4 | 0 | 0 | 11 | 3 | 8 | 12 |
| 3 | Aston Villa | 5 | 4 | 0 | 1 | 10 | 7 | 3 | 12 |
| 4 | Chelsea | 5 | 3 | 1 | 1 | 11 | 5 | 6 | 10 |
| 5 | Arsenal | 4 | 3 | 1 | 0 | 6 | 1 | 5 | 10 |
| 6 | Newcastle UnitedNewcastle | 5 | 3 | 1 | 1 | 7 | 6 | 1 | 10 |
| 7 | Brighton & Hove AlbionBrighton | 4 | 2 | 2 | 0 | 6 | 2 | 4 | 8 |
| 8 | Fulham | 5 | 2 | 2 | 1 | 7 | 5 | 2 | 8 |
| 9 | Nottingham ForestNott'm Forest | 4 | 2 | 2 | 0 | 4 | 2 | 2 | 8 |
| 10 | Tottenham HotspurSpurs | 5 | 2 | 1 | 2 | 9 | 5 | 4 | 7 |
| 11 | Manchester UnitedMan Utd | 4 | 2 | 0 | 2 | 5 | 5 | 0 | 6 |
| 12 | Brentford | 5 | 2 | 0 | 3 | 7 | 9 | -2 | 6 |
| 13 | Bournemouth | 5 | 1 | 2 | 2 | 5 | 8 | -3 | 5 |
| 14 | West Ham UnitedWest Ham | 5 | 1 | 1 | 3 | 5 | 9 | -4 | 4 |
| 15 | Leicester CityLeicester | 5 | 0 | 3 | 2 | 6 | 8 | -2 | 3 |
| 16 | Ipswich TownIpswich | 5 | 0 | 3 | 2 | 3 | 8 | -5 | 3 |
| 17 | Crystal Palace | 4 | 0 | 2 | 2 | 4 | 7 | -3 | 2 |
| 18 | Southampton | 5 | 0 | 1 | 4 | 2 | 9 | -7 | 1 |
| 19 | Wolverhampton WanderersWolves | 5 | 0 | 1 | 4 | 5 | 14 | -9 | 1 |
| 20 | Everton | 5 | 0 | 1 | 4 | 5 | 14 | -9 | 1 |
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