I will give my best to Arsenal. I'm so happy to be here! Sanchez completes £30m move in deal that will net Chile's World Cup star £140,000-a-week... and pave the way for Suarez to join Barcelona

• Santi Cazorla confident Alexis Sanchez can help Arsenal win Premier League title

Alexis Sanchez - the man Arsenal believe can fire them to the Premier League title - has sealed his £30million move from Barcelona. The Chile superstar, who cut short his holiday to finalise the transfer in London, completed a medical and agreed a four-year contract - with the option of a further 12 months - worth up to £140,000-per-week. The move paves the way for Barcelona to sign Luis Suarez from Liverpool.