1) Christopher Nkunku
Maresca has spoken out publicly to say that the Frenchman is not a no.9 and there was more evidence of that when he came too deep for the ball during the defeat to Brighton in the FA Cup.
However, Nkunku has played 20 of his 31 games this season as a striker, so he is more than capable of filling in while Jackson is on the sidelines.
The 27-year-old was keen to leave Stamford Bridge on a permanent basis in January due to a lack of starts in the Premier League.
With Jackson out of the picture, Nkunku has been given the perfect opportunity to prove to everyone why he should be a regular starter for the Blues.
