Sanchez 'best signing in the last 6 years'

London - Alexis Sanchez became the first Arsenal player since Thierry Henry to score over 20 goals in his first season and manager Arsene Wenger said the Chilean has exceeded all his expectations.

The effervescent 26-year-old scored a brace in Arsenal's 3-1 Premier League victory against Hull City on Monday to take his tally to 24 goals in all competitions in his debut campaign.

Sanchez has set the Premier League alight since his £35 million arrival from Barcelona in the close season though his impressive goal tally tells only part of the story of his impact at the Emirates Stadium.