Jose Mourinho insists Brendan Rodgers should have held off quitting Celtic for Leicester until the summer.
Rodgers got off to a losing start in his first game as Foxes boss on Sunday, sliding to a 2-1 defeat at Watford thanks to Andre Grey's late goal.
A target for angry Celtic fans after he left Glasgow in the midst of a quest for an unprecedented treble Treble in Scotland, Rodgers has answered accusations of treachery by insisting he took Celtic as far as he could.
A guest of Keyes and Gray on beIN Sports, however, former Manchester United and Chelsea boss Mourinho - in charge of Porto when they beat Celtic in the UEFA Cup Final of 2003 - claims he would have told Leicester to wait until the end of the season
'Celtic is a giant club,' said the Special One.