Arsenal's Danish striker Nicklas Bendtner has admitted that he is struggling to shake off his persistent groin injury before the English Premier League season starts.

The 22-year-old underwent surgery in November last year but it failed to eradicate the problem completely and he missed the end of the English season. Bendtner said he was still in a lot of pain, despite having a complete rest since leaving South Africa after Denmark failed to make it past the group stage.

He is set to undergo a scan when he returns from holiday. "I still feel quite bad in my groin," the Daily Mirror newspaper quoted him as saying. "Sadly it hasn't been better during my holiday, like I expected it to, giving it nothing but rest. And that worries me a lot.

I had hoped and counted on that a total break from football and training would heal the injury but it hasn't happened.

Nicklas Bendtner

"I had hoped and counted on that a total break from football and training would heal the injury but it hasn't happened. I have spoken to Arsenal throughout the holiday and I am having a big scan when I return this week. My whole body must be scanned to find out where the groin problem really comes from.

"I still feel pain and it is very frustrating. I don't know where I am in relation to playing football. It is not the best way to return to Arsenal like this, but the club and I have got to get to the bottom of my problem now."

The Dane notched 12 goals for the Gunners last season. Bendtner scored in Denmark's 2-1 win over Cameroon in FIFA World Cup Group E but their 2-0 defeat to the Netherlands and 3-1 loss to Japan saw them crash out of the tournament. Arsenal's first game of the season is a visit to Liverpool on 15 August.