Alex Oxlade-Chamberlain is "chomping at the bit" to help Arsenal deliver success this season.
The England international was one of the bright spots on a difficult night for the Gunners in Dortmund, causing the German side problems with his pace and positivity when he came off the bench.
Oxlade-Chamberlain could not deny Borussia their 2-0 victory but he feels in fine fettle and is ready to step up when Arsene Wenger needs him.
"I like to come on and make an impact with the game by running with the ball or just generally, bringing an injection into the side"
"I feel good in myself and when I get told to play I will be chomping at the bit to help the team," said Oxlade-Chamberlain. "It is up to the boss to decide when that is but I will be ready.
"I have been [dealing with competition for places] for four years. I know what this game is all about. I am a young lad in a very good Arsenal squad and I understand that.
"I want to play as much as I can but I have bought into the idea of what our team wants to do this season and that means it will need all of us to pull our weight to start games or come off the bench. We have to be 100 per cent focused for when our chances come."
Oxlade-Chamberlain raised Arsenal's tempo on Tuesday night and he sees that as one of his major attributes.
"I think that is the kind of player I like to be, I like to come on and make an impact with the game by running with the ball or just generally, bringing an injection into the side," he said.
"I will continue to try and do that. We have a lot of players capable of doing that. Once everyone fires on all cylinders we can get the results we are looking for."
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