“Spygate” isn’t just an American football term anymore.  Ripped from the headlines of the Bill Belichick-era Patriots, English football is now facing a scandal that could have even greater significance than its North American counterpart.  EFL Championship side Middlesbrough has alleged that a member of the Southampton staff spied on a training session last week, a mere 48 hours before the two sides met in the first leg of the Championship playoff semifinal. Southampton’s Finn Azaz reacts during the first leg against Middlesbrough. Action Images Now, photos emerged on Wednesday showing a man, identified as William Salt, appearing to record a session from behind a tree.  Multiple outlets published the photo on Wednesday of the man observing practice at Rockliffe Park training ground – where Middlesbrough’s team facility is – and Boro is calling for the greatest sporting sanction possible to be handed down on Southampton.  Southampton is being accused of violating Rule 3.4 and Rule 127 of…