Lukasz Fabianski's delight at making his first appearance of the season in Wednesday's Carling Cup victory over Liverpool has been quickly curtailed by the news that the Arsenal goalkeeper will be sidelined for three weeks.
Fabianski started the game at Emirates Stadium following his recovery from knee surgery and helped Arsenal secure a 2-1 victory, despite being beaten by a stunning volley from Liverpool left back Emiliano Insua which dipped viciously over his head.
It was felt that the Poland international could be a contender to feature for the first team in Saturday's North London derby given that Arsenal are seemingly without an established number one at present, but a thigh injury sustained in the cup game has prevented his involvement against Tottenham.
Wenger will now decide whether to keep his faith in Vito Mannone or restore Manuel Almunia to the starting line-up in place of the young Italian. The Arsenal manager has also confirmed that Tomas Rosicky will play no part against Spurs due to a knee problem.
"We lost Lukasz Fabianski with a thigh injury," Wenger told the club's official website. "He will be out for three weeks. Of course it is big disappointment because he has just come back from injury.
"Also Wilshere (ankle), Walcott (knee), Denilson (back) and Rosicky (knee) will not be back for the game at the weekend. But we did not lose any players from last night."