The Catalan midfielder has reaffirmed his commitment to the Blaugrana and says he hopes to remain at Camp Nou for the foreseeable future
The 25-year-old midfielder was withdrawn after an hour of Barca's 1-0 victory over Valencia at the weekend, after missing two big chances to double his side's lead.
However, he is thoroughly enjoying life at Camp Nou and says he will not let his bad run of form get him down.
"I came here to have a long career," the former Arsenal skipper was quoted as saying by Diari ARA.
"People ask a lot from me because I cost a lot. I won't give up, I want to retire at Barca.
"I knew I came here to compete with the best in the world. I will work hard to make things difficult for the coach."
The Spain international also expressed the hope that the Blaugrana remain at Camp Nou for the foreseeable future, citing the belief that there was a loss of atmosphere after the Gunners left Highbury for the Emirates during his time in north London.
"Camp Nou is a beast of a stadium," he continued. "I wouldn't want the same thing to happen as with Arsenal. The Emirates is not Highbury.
"Highbury was very tiny, but it had its charm. Emirates is a great stadium, modern, but it's not Highbury."