According to Diario AS, Lionel Messi's camp has rejected Barcelona''s initial offer of a contract extention. Messi's contract runs through June 2018.
Despite the initial rebuff, no one expects Messi to play anywhere besides Barcelona. It's understood he'll sign an extension eventually, but certainly the powers that be at Barcelona will be much happier should that happen sooner rather than later.
The offer was reported to be in the neigborhood of 30-30 million Euros per year.