Stoilov believes the pressure could get to Rooney and urged Hungarian referee Viktor Kassai and his fellow officials to stamp out any aggression he might show towards his players.
Stoilov said: "If Rooney is nervous because of his lack of goals he should be punished if he is too aggressive, but that is the referee's job. Rooney has great skills so I have to teach my players how to stop him on the pitch and not to provoke him. It is not the style of the Bulgaria national team to provoke. We came here to play fairly.'