The Emirates outfit take on the Bundesliga champions at Signal Iduna Park on Tuesday, and are stretched in midfield.
Wenger already has to do without Jack Wilshere, who will be sidelined for a number of months with an ankle injury, and Abou Diaby; the latest blow is difficult to take.
“Ramsey has been influential during our season but this is an opportunity to show we have a big squad. This is a good opportunity for us to create positive vibes. We need that. Every team, no matter how good it is, needs this,” he told The Daily Mail.
“I feel once we get our injured players back we can compete. Let’s get Wilshere back because he has played a big part in the quality of our game. His qualities are very difficult to find. I believe that we can be competitive. But the next two months will tell,” he stated.
With Germany international attacking midfielder Mario Gotze a key man for Jurgen Klopp’s team, added responsibility will be placed on Emmanuel Frimpong and Alex Song to shackle the 19-year-old.
Dortmund have a host of young, exciting players in their ranks and Wenger knows the home side will provide tricky opposition for The Gunners.
“I have a lot of respect for the team. They play very fast, very offence very similar to Arsenal. Dortmund have very good technical qualities, they are well organised,” he concluded.
Arsenal got back to winning ways with an edgy 1-0 victory over Swansea at the weekend, and will look to build momentum by avoiding defeat in their first European fixture of the season.
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