The winger joined the Catalans from Udinese in 2011 but has failed to recapture the sort of form that made him one of Europe's most desirable forwards.
As a result, the transfer rumor mill has continued to link him with a move back to Italy, with reigning Serie A champion Juventus reportedly keen on his signature, though he says he has no plans to go anywhere anytime soon.
"I feel important at the national team and at Barcelona. I'm happy with life at Barcelona," the attacker was quoted as saying by Sport.
"I know what kind of player I am and I know that I can make the difference. I can be one of the best players in the world."
Sanchez, 24, has a contract with Barcelona until June 2016.