Preston North End boss Graham Westley is certain that four of his players leaked his side's tactics before their 2-0 defeat to Sheffield Wednesday on Saturday.
At the end of the game, Westley said the Wednesday bench told him that they had know about Preston's gameplan and team selection before kickoff.
Westley said: "To stand in the dugout today and to be told by [Sheffield Wednesday's] dugout that four of our players had given our side to them says where our side is at."
Westley took over from Phil Brown after leaving League One rivals Stevenage in the New Year.
"That shows you what we are up against," added Westley.
"It doesn't surprise me. When you have got people in your own camp working against you it is tough."
The defeat leaves Preston in 16th, just six points off the relegation zone.
