Manchester United boss Sir Alex Ferguson steamed into Chris Smalling after defeat at Manchester City.
The Sun says Red Devils boss Fergie turned the hairdryer on defender Smalling for being at fault for City's winner.
He lost Vincent Kompany in first-half injury time as the City skipper grabbed the only goal of the game to send his side top on goal difference.
Ferguson said: "If you lose a goal at a set-piece you only have yourself to blame at this level."