Arsenal striker Joel Campbell says he'll take his chance when he comes.
Campbell played the full 90 minutes of Arsenal's 4-1 win at Galatasaray and the experience of first-team football has left him wanting more.
"It was an important victory for us," he told Arsenal.com. "Although there wasn't all that much riding on the match, it was a chance for us to try and get first place in the group. We didn't manage that, but we did get a good win.
"I always try and take advantage of the chances that come my way and play as well as I can. I know that I can give more, so I'm working hard day in, day out to improve as a player.
"The Champions League is a big competition for any player. In a team like Arsenal, it's easier to play well because you're surrounded by good players. I just try to do the best I can so that I might be involved in future games.
"We need to be fighting for the trophy. We're in there and any team still in the competition at this point has a chance of winning the cup. We'll be working very hard to try and achieve that."