Mosquera is currently on-loan this season with the Yellow Submarine.
He said, "It is a very nice experience. I am growing a lot as a player and personally. I had not had the opportunity to play on a field as beautiful as Athletic's, but feeling that there are clubs that can compete with you and demand, you can get a quite a good experience.
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"I am happy, as I have expressed it from minute one, with the way in which I have been adapting here at LaLiga.
"I have expressed it before: I like Villarreal, LaLiga and I want to be able to continue providing what I can to the team. I know that not everything depends on me, but on my part I leave everything open so that an agreement can be reached."