Shinji Kagawa is eager to leave Borussia Dortmund due to a lack of playing time and hopes to secure a move to LaLiga.
Dortmund are enjoying a fine season and sit comfortably at the top of the Bundesliga with 30 points from 12 matches and are yet to lose in the top flight.
Some of the team's more experienced individuals have found playing time difficult to come by as a result, with Mario Gotze featuring just five times in the league and Kagawa playing only twice.
"I want to solve the current situation as soon as possible," the 29-year-old Japan international told Nikkan Sports. "One way is to change the team. I want to change the environment and challenge.
"I have played in Dortmund and Manchester United, no matter what country I go to, I will not be afraid.
"I have always been thinking about how I can go to Spain in the last couple of years. I can't retire without going to Spain. This is the most important challenge in my career."
