The Chile forward joined the Gunners in a £30million deal from Barcelona during July 2014.
Here, Press Association Sport looks at Sanchez’s career in numbers.
141 – Appearances for Barcelona, where Sanchez won the 2012/2013 LaLiga title
122 – Premier League appearances with Arsenal
119 – Caps for Chile, scoring 38 goals
60 – Premier League goals
30 – Goals in all competitions for Arsenal last season
25 – Premier League assists
19 – Starts for Arsenal in the Premier League this season
7 – The forward’s shirt number at Arsenal and now Manchester United
2 – Copa America triumphs with Chile and also the number of FA Cup wins for the Gunners, Sanchez scoring in each of the finals at Wembley