Aston Villa midfielder John McGinn has picked out one teammate who has ‘surprised’ him in training. Aston Villa head to West Ham on Saturday evening for the opening match of their Premier League campaign. Paul Merson has predicted a ‘difficult’ game for both sides and expects Villa to come away with a draw while Roy Keane believes Unai Emery’s side will start their season off in a positive fashion. The Villans have endured a difficult pre-season, losing four of their last five matches, including defeats against Columbus Crew, RB Leipzig and Club America while securing a victory over Athletic B…