Nicklas Bendtner: Arsenal striker out for a month with ankle injury

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Arsenal striker Nicklas Bendtner is set for a month on the sidelines with an ankle injury.

The Denmark international, 25, came off the substitutes' bench to score the opener in the Gunners' 2-0 win over Cardiff on New Year's Day, but sprained his ankle in the process.

Video caption, Arsenal 2-0 Cardiff: Arsene Wenger rues striker shortage

He missed Saturday's 2-0 FA Cup third-round win at home to Tottenham.

Top scorer Olivier Giroud also missed the clash with an ankle problem, while Theo Walcott went off injured.

With the transfer window now open, manager Arsene Wenger admitted earlier this week his side's injuries "show we are short".

However, he declined to be drawn on whether he would be targeting a striker in this month's transfer window.

Bendtner scored in last month's 2-0 win over Hull in his first Premier League start for Arsenal since 5 March, 2011.

His last Premier League goal for the Gunners before that was against Wigan on 29 December, 2010.