Arsenal forward Pierre-Emerick Aubameyang is frustrated by the fact that he will not be able to play for the Gunners in the Europa League this season.

The Gabon international continued his good form for Arsene Wenger's side this weekend as he went on to score his third goal in five Premier League appearances as Arsenal recorded a 3-0 victory over Watford.

However, he's not eligible to compete in the Europa League as his former club Borussia Dortmund dropped down to the competition after being eliminated during the group stages of this season's Champions League.

"I am really frustrated because the rules are a bit - I don't know how to say in English but I am disappointed because I can't help my team," he said.

"That's life. I have to deal with it. I can't play every three days. When I was in Dortmund, I was playing every three days but now I play once a week or have a long time between games. It is not easy."