Vela is looking forward to facing Champions League opponents Manchester United tomorrow.
He told The Independent: "I've grown a lot. The fact I didn't get so many minutes at Arsenal meant I never had the continuity you need to be able to develop. Here I have the confidence and the time on the pitch.
"I've grown in every way and am a much better player than I was at Arsenal. When you're playing week in, week out, your confidence, your motivation is different and that's when you're prepared to risk trying new things and I've managed to get the best out of myself."
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