LONDON – Manchester City manager Pep Guardiola has warned his players not to be complacent as they prepare to host FC Copenhagen in the Champions League last-16, second leg on March 6, after a 3-1 victory three weeks ago.

City head into the match on a 19-game unbeaten run in all competitions, and they clinched their 17th win in this streak by beating rivals Manchester United 3-1 at the Etihad on March 3.