Alexis Sanchez has become the latest influential player sold by the Gunners to a major opponent in the Premier League. Here are some other key players who left north London in the last decade in search of silverware or better wages.
ASHLEY COLE
Joined Chelsea in 2006; £5m plus William Gallas
EMMANUEL ADEBAYOR
Joined Manchester City in 2009; £25m
KOLO TOURE
Joined Manchester City in 2009; £16m
GAEL CLICHY
Joined Manchester City in 2011; £7m
SAMIR NASRI
Joined Manchester City in 2011; £25m
ROBIN VAN PERSIE
Joined Manchester United in 2012; £25m
BACARY SAGNA
Joined Manchester City in 2014; £10.8m