Alexis Sanchez has made a big impact for Arsenal since joining . Mauricio Isla and Sanchez are both in the Chile squad to face Brazil at The Emirates the last eight . Isla wants revenge over Brazil after losing on penalties at the World Cup .
Alexis Sanchez has made a big impact for Arsenal since joining . Mauricio Isla and Sanchez are both in the Chile squad to face Brazil at The Emirates later this month . Isla wants revenge over Brazil after losing on penalties at the World Cup .