Kenny Miller reckons the Celtic mole could prove fiercely difficult to track down.
Parkhead boss Neil Lennon was left furious on Saturday when his team to face Rangers surfaced online hours before kick-off.
His side went on to suffer an abject 2-0 defeat and Miller believes the advance warning proved a useful leg-up for the Ibrox men.
The former Rangers and Celtic striker doubts any of Lennon's squad would be responsible and admits there are so many potential avenues that it's difficult to pinpoint the source.
Lennon's team has leaked on a number of occasions since retaking the job and Miller believes it'll be driving the manager up the wall.
He told Sky Sports: “These things happen, if there actually is a leak I would seriously doubt if it was any of the players. There is that many people involved in football clubs and that many people in the training grounds.
“It might not have been done on purpose, it could have been leaked to someone who has done it through a third party.
“If he has an idea as to how it has got out it will be so disappointing because these things can be so vital.
“To be honest, when the team and formation comes out you know what is happening an hour before anyway.
“But if you’ve had that opportunity to prepare for it and it is something different – i.e. formation changes – it maybe gave Rangers a bit of a heads up and an opportunity to prepare for what they would be facing.”
