Arsene Wenger has warned his Arsenal stars to keep their cool when they face bitter rivals Tottenham as the heated north London derby returns to Wembley for the first time in 25 years. Languishing in sixth place in the Premier League, Wenger’s side are however just four points behind fifth placed Tottenham. With their hopes of…

LONDON, ENGLAND - MARCH 05: Francis Coquelin (R) of Arsenal is shown a red card by referee Michael Oliver (L) during the Barclays Premier League match between Tottenham Hotspur and Arsenal at White Hart Lane on March 5, 2016 in London, England. (Photo by Shaun Botterill/Getty Images)