The Arsenal star suffered a nasty ankle injury while on international duty with Chile.
The Gunners star has been busy this summer, guiding Chile to their second Copa America success in the last two years.
He picked up a nasty foot injury in the final of the tournament when Argentina’s Gabriel Mercado stood on his foot in the early minutes of the game.
It was a painful injury for him, and he demonstrated the extent of the injury in a post on Twitter after the game that showed extensive bruising and swelling.
Cuarto día de mis vacaciones, encerrado en el hotel aburrido jajaja ... Pero ya estoy mucho mejor. ✌ pic.twitter.com/i0KN0JBsnE— Alexis Sánchez (@Alexis_Sanchez) June 30, 2016
There had been some concern that the injury could be a bad one, and he may end up missing the beginning of the season as a result.
He has moved to ease those worries though, with his latest post showing there has been significant improvement since last week.
Sanchez's good news will be warmly welcomed by Arsenal fans, and indeed Arsene Wenger, who were fearing that a number of players would be missing next season after their extra exertions on international duty this summer.