Theo Walcott has warned his Arsenal teammates they are in danger of losing the battle to finish in the Premier League's top four unless they play with more urgency.

Arsene Wenger's side heads into Wednesday's London derby against West Ham on the back of successive league defeats to Manchester City and Chelsea which have left its bid to qualify for the Champions League in crisis.

The Gunners, languishing in sixth spot, trail fourth-placed Tottenham by seven points and sit 11 points adrift of third-placed Chelsea.