Arsenal power rankings: Who's in form and who must improve? Impressed: 1/5

Alexis Sanchez: Even with the controversy over contracts and his apparent 'laugh' during the defeat to Bayern, Sanchez has shown why he is Arsenal's best player. He came on to assist Welbeck after he was benched at Anfield and his goal against West Bromwich Albion was the result of a player producing as much as he can in a team that struggles to reach the same standards.

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