The teenager feels having players who can make a difference on the bench can only aid Arsenal's quest for Champions League qualification.
"You always want to start but your responsibility when you are on the bench, especially as a winger, is to come on, change the game and help drive the boys forward, that is what I have been trying to do, to make things happen and add a different dynamic to the game," he said.
"I have been working on things like my team play, my defensive play and getting back into the right positions off the ball and these things aren't often noticed.
"I started pre-season playing in central roles and have played there in training, so I am trying to develop that as well.
"I am happy with the way things are going and the most important thing is that the team finishes where we need to. I am happy to be a part of that."