Sanchez is now in the final year of his contract at the Emirates Stadium and has been heavily linked with a move to Manchester City after demanding wages of £400,000 a week from the Gunners.
The 28-year-old has now given the biggest suggestion yet that he will leave the club this summer due to Arsenal's failure to qualify for the 2017-18 Champions League.
"The decision I have made, I have to wait for Arsenal's response," Sanchez told reporters in Chile, according to The Express.
"It depends on them, what they want but my idea is to play the Champions League and win it. For now I am at Arsenal and I finish my contract in one more year."