The Liga leader revealed in December that the 32-year-old had agreed to extend his current deal at the club, which is due to expire in June 2014.
Tito Vilanova's side has now confirmed that the midfield star will put pen to paper at the beginning of next week, with the new deal set to keep him at the club until June 2016.
The news follows Carles Puyol's decision to pen fresh terms at Camp Nou earlier this week, with the captain also signing an extension until 2016.
Lionel Messi is also expected to sign a new deal in the coming weeks, with the Argentina attacker set to commit his future to the club until 2018.
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