Derby County manager Frank Lampard has expressed his annoyance with Leeds United counterpart Marcelo Bielsa and the presentation he gave about his unorthodox coaching methods.
Bielsa admitted in a hastily-arranged press conference on Wednesday that spies had watched all of the club's opponents this season, with the issue having initially been raised when a Leeds employee was caught outside Derby's training ground ahead of their clash in the Championship.
The Argentinian faced widespread criticism for his actions, including from Lampard, and admitted it was not an isolated incident.
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And speaking after his team's FA Cup penalty shoot-out win over Southampton, the former Chelsea midfielder expressed his bemusement at the steps taken by Bielsa in addressing the media on Wednesday.