"I've tried to develop my game every season, and I am still trying," he told UEFA.com. "I've moved on from relying on my pace – relying on beating defenders, trying to unbalance them – to playing in other positions.
"I'm equally comfortable in midfield or on the left. I've got the experience of playing left wing, and now I try to take up a position and produce passes to trouble a defender rather than going past him. Being effective on the pitch is what it's all about."
The first leg of the tie finished in a 1-1 draw at the Santiago Bernabeu in Madrid last month.