A terrible mix-up between goalkeeper Wojciech Szczesny and centre-half Laurent Koscielny gifted Birmingham substitute Obafemi Martins a last-minute winner which leaves the Gunners still searching for their first piece of silverware since 2005. Gunners captain Fabregas was, along with England winger Theo Walcott, not fit to play at Wembley, but insisted there would be more to come from Arsene Wenger's young squad. The Gunners tackle Leyton Orient in their FA Cup fifth-round replay at Emirates Stadium on Wednesday night, are second in the Premier League and will take a 2-1 lead to Barcelona for the second leg of their Champions League tie on March 8. Speaking on Twitter, Fabregas said: "Congratulations to Birmingham. "This team has great potential and there are still great targets to play for this season. Thanks for your support." Zigic had headed the Blues in front on 28 minutes. Robin van Persie equalised with a fine volley, but would later go off carrying a knee injury which could see him miss the Champions League clash in Barcelona on March 8. The Dutchman was skipper on Sunday, and apologised to the Arsenal fans after the team again failed to deliver on the big stage. "I am very sorry that we could not bring CC [Carling Cup] back to north London," he said. "Thanks for your support today. Sorry again." Jack Wilshere also offered words of encouragement for the Arsenal supporters on his Twitter account. The England midfielder, 19, wrote: "All I can say is sorry to the fans. It hurts a lot, I know, but we must all stick together. Still in 2 other comps! [sic] We have to move on. Sorry." However, full-back Bacary Sagna could not hide his disappointment, simply saying: "Just feel ashamed. Sorry."
