By Chelsea correspondent Tony Hughes| Premier League expert with experience of breaking big stories, including exclusives like this

Diego Costa will not face a lengthy spell on the sidelines in a major boost for Chelsea, Football Insider sources understand.

Costa was rushed to hospital on Saturday night for scans on a shin injury sustained in his team’s 3-3 Premier League thriller with Everton.

A Chelsea source has told Football Insider that the results have showed there is only bruising to his tibia, and crucially no break or fracture.

Costa was back at the club’s Cobham headquarters on Monday for treatment on his injury and is now facing a race against time to be fit for the champions’ Premier League trip to Arsenal on Sunday.

Costa has scored five goals in five games under Guus Hiddink and the new manager will hope his No1 striker can play a part at Emirates Stadium.

Against Everton, Costa scored a goal and supplied an assist as Chelsea fought back from 2-0 down before limping off at the 80-minute mark with the score at 2-2.

Hiddink confirmed that despite his lack of options, Chelsea were not in negotiations with any club over signing a new striker.

Fitness race: Hazard has missed Chelsea's last three games with hip injury

Fitness race: Hazard has missed Chelsea’s last three games with hip injury

Meanwhile, Hiddink has said Eden Hazard must prove his fitness in training this week after missing Chelsea’s last three matches with a hip injury.

“We have to be a little bit careful that we don’t fall again with a setback,” Hiddink explained.” That’s why I say he must have some tough training sessions. From Tuesday to Thursday he must have intense training sessions. Then we’ll decide if he can join us in the Arsenal game next weekend.”