In a statement, the Catalan club said a performance-base clause could add a further 1,500,000 euros to the transfer fee.
Sao Paulo hold 60 percent of the player's economic rights with the balance held by sports marketing firm Traffic.

"Douglas will travel to Barcelona this weekend for a medical exam... (and) sign a five-year contract," the Barcelona statement said.

The announcement comes after Sao Paulo last week confirmed the parties had reached an in-principle agreement
Recently, football’s world governing body FIFA had announced in a statement that Barcelona had lost an appeal against a decision to ban them from the transfer market for two consecutive windows.

As a result, Barca, who were found guilty of breaching rules on the international transfer of under-18 players, was banned from registering players during the next transfer window in January as well as the 2015 summer window.

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