From Bayern Munich's official website:
Vidal a confirmed target
Nerlinger and new head coach Jupp Heynckes also confirmed Bayern’s interest in signing Leverkusen midfielder Arturo Vidal, who has “very clearly" stated his desire to follow his former boss to the south. “But we've also noted the comments made by the Bayer Leverkusen directors," Nerlinger remarked.
The Rhineland outfit do not wish to sell the Chile star, currently in the preparatory phase ahead of the Copa America. “So again, we'll have to wait and see," stated Nerlinger. Should Vidal not be released this summer, even though that would be “against expectations," according to Heynckes, the 24-year-old would be able to join Munich on a free transfer in 12 months’ time.
http://www.fcbayern.telekom.de/en/news/news/2011/29935.php