The Chile international scored 15 times in 34 appearances for the Blaugrana last season and, though many would be satisfied with that tally, the 23-year-old feels that he still has much to prove.
|6/1||Alexis Sanchez is 6/1 with William Hill to score two or more goals against Sevilla
"I can give a lot more to the side and I know how good of a player I am. The best Alexis has yet to arrive.
"I accept the criticism [from the press] because it makes me stronger."
The ex-Udinese star has made six appearances so far this season, with competition for places heightened by the return from injury of David Villa and the emergence of youngster Cristian Tello - a reality welcomed by the winger.
"I have to earn a spot in the line-up each week," he concluded.