Pierre-Emerick Aubameyang wary of Mesut Ozil, Olivier Giroud

Pierre-Emerick Aubameyang has declared that Borussia Dortmund will need to be at their very best to beat Arsenal in tomorrow night's Champions League showdown at the Emirates Stadium.

The Gunners are unbeaten in their last 12 matches in all competitions and sit top of Group F after two games, thanks to victories over Marseille and Dortmund.

Aubemeyang admits that Dortmund were far from their fluid best in last weekend's 1-0 victory over Hannover, while picking out Mesut Ozil and Olivier Giroud for special praise.

Sky Sports News quotes him as saying: "Playing Arsenal won't be easy at all and we'll have to do much better than we did on Saturday.

"We didn't have our usual rhythm and didn't play the high-tempo football we normally do. I had the impression some of us were already tired going into the game, and it got worse as the match progressed."

"Ozil is in great form and is crucial to Arsenal's game, but they're a quality side anyway. Olivier Giroud, for example, is also a very good player. I know him well from my time in France, he's a dangerous striker."

The 24-year-old has adjusted quickly to life in the Bundesliga, scoring five times in nine league games so far this season.