Sanchez is set to move into the last six months of his Arsenal contract at the turn of the year and is widely expected to leave the club on a free at the end of the season.
'Gunners' boss Arsene Wenger had previously insisted that the 29-year-old would not be allowed to leave the club until the summer, despite interest form elsewhere, however, reports in England suggest there has been a change of mind from the Frenchman.
English publication 'The Daily Mail' claims that Arsenal will consider offers in the region of £35m for their star forward during January, just six months after turning down a £60m bid from runaway Premier League leaders Manchester City.
This change of heart has reportedly come about due to growing concerns among the Arsenal squad and coaching staff that Sanchez is no longer committed to the club, with many citing a perceived drop in effort in both training and matches from the former Barcelona man.
Pep Guardiola's side remain Sanchez's most likely destination, though it is thought that they are repared to shelve their interest in the player until the summer in order to snap the Chile international up on a free and avoid unbalancing their squad at a pivotal time in the title race.