Arsenal captain Cesc Fabregas insists he will do everything in his power to be fit for Sunday's Carling Cup final clash with Birmingham.
Arsenal have gone five years without silverware and Fabregas' hopes of leading the side out at Wembley are in doubt after he limped out of the Premier League win over Stoke on Wednesday with a hamstring injury.
The Spain international's hamstring strain will be assessed by the club's medical staff on Thursday and Fabregas will leave no stone unturned to prove his fitness.
"I dont know if I'll make Sunday or not, but all I know is that from this moment to Sunday I won't sleep if it's necessary," Fabregas wrote on his Twitter profile. "I've waited too long to captain a final for Arsenal and I won't give up till the last second."
Arsenal will definitely be without Theo Walcott who was stretchered off against Stoke with an ankle sprain and is facing up to the prospect of a spell on the sidelines.
Arsene Wenger admitted that he did not know how long the pair would be out for. The worst case scenario for the Gunners is that Walcott and Fabregas, who has struggled with hamstring problems in the past, will not be fit for the second leg of the club's Champions League last-16 tie with Barcelona in two weeks' time.
Wenger said: "Theo Walcott has an ankle sprain and he is out. For how long, I don't know, but he is definitely out of Sunday.
"Fabregas has a hamstring problem. It is impossible to see how serious it is. We will know on Thursday.''
Wenger confirmed that he will know by Friday whether Laurent Koscielny and Robin van Persie, who are struggling with back and hamstring complaints respectively, will be fit for Sunday's game.