Manchester City manager Pep Guardiola insists opposition teams spying on one another is commonplace in other countries amid the ongoing intrigue around Leeds United boss Marcelo Bielsa.
Before last Friday's 2-0 win over Derby County in the Championship, Bielsa admitted a man questioned by police after he was found carrying binoculars and wire cutters while acting suspiciously near the Rams' training ground was a Leeds employee.
Derby boss Frank Lampard condemned the behaviour, while acknowledging Bielsa's honesty, and the maverick Argentinian coach called a media briefing on Wednesday where he outlined the remarkable scope of his pre-match preparations and research on opponents as part of a lengthy PowerPoint presentation.