article_snippet: Sportsmail's Martin Keown, speaking as a pundit on BT Sport, reacted to the news of Mertesacker's absence for the crucial game at the Emirates saying: 'I don't you can point the finger at one player after the Monaco game.
article_snippet: Sportsmail's Martin Keown was joined by Steve McManaman (far right) and Michael Owen (second left) on  BT Sport . '
article_snippet: Mertesacker, with the experience Mertesacker has in the game, should have been calling these young players back the other night, the two full-backs were just drifting up the pitch and not coming back. '
article_snippet: When Mertesacker's been left isolated one-on-one Mertesacker struggles due to Mertesacker lack of pace too.
highlights_snippet: The 30-year-old struggled during Wednesday's 3-1 defeat at the hands of Monaco in the Premier League .
  