A Chile international, Medel hopes he can help his country qualify for next year's World Cup in Brazil as well as proving himself in his new surroundings.
"It is a new challenge that I want to fulfil," he told Radio Cooperativa.
"It's going to be different. Football here is tougher, stronger, faster, a new challenge.
"I want to get to try to reach a larger team. I went step by step and got every part of my dream, now my goal is to qualify for the (World Cup) finals, which is what all Chile wants, and to try to play in the Champions League or other major leagues."
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