The Chile international’s future has been a source of relentless speculation in the summer transfer window so far given the continued uncertainty surrounding his long-term future at the north London club.
Sanchez has less than 12 months remaining on his current Arsenal deal, which has prompted inevitable talk of a potential departure from the north London side in the summer transfer window.
Manchester City are rumoured to be leading the race to sign the 28-year-old striker ahead of the 2017-18 season, but there have been reports linking champions Chelsea with a swoop.
The Premier League holders sold Czech Republic international Petr Cech to Arsenal in an £11m deal in 2015 but former Tottenham Hotspur goalkeeper Keller doesn’t envisage another swap between the two London rivals.
Speaking to ESPN FC about Sanchez completing a controversial move across London in the summer transfer window, Keller said on Wednesday:
“I don’t think Arsenal will let him to go to Chelsea.
“Chelsea did them a favour letting Petr Cech going but I don’t think that favour is going in the other direction.”
Sanchez scored 24 times in 36 games in the Premier League last season but Arsenal still finished in fifth place.
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