Everton manager David Moyes is believed to have walked out of Ewood Park at half time during Blackburn Rover's defeat to Bolton Wanderers on Tuesday due to hostile supporters.
The Toffees boss is believed to have told people that he was "disgusted" at the treatment of Rovers boss Kean during the club's 2-1 loss to Owen Coyle's side, according to The Mirror.
The 48-year-old was in attendance in Lancashire to watch Bolton in preparation for their Premier League meeting in two weeks' time.
Moyes isn't the only manager to have condemned the Rovers' fans abuse - Tottenham Hotspur boss Harry Redknapp believes that the supporters' treatment of Kean is "horrific".