After a classic European match of goals, suspensions and controversy, Arsene Wenger and Pep Guardiola face the prospect of guiding their teams through an equally explosive second leg. Pep had Barcelona and Zlatan Ibrahimovic dominating the first leg until Wenger's introduction of Theo Walcott changed the game and swung it back into the Gunners' favour. With a semi-final place at stake, and without some of the world's finest attacking players, both managers will pit all of their experience and expertise against each other in the biggest clash of the season. Will they stay true to their attac ...