Jose Mourinho and Ole Gunnar Solskjaer have been involved in a war of words after Manchester United's win over Tottenham on Sunday.
United went ahead through Edinson Cavani in the first-half but the goal was controversially ruled out for a foul by Scott McTominay on Son Heung-min following a VAR check.
After the match, Solskjaer commented on the decision to Sky Sports: "The game has gone. Game has absolutely gone.
"If that's a clear and obvious error, it's an obvious error he had to look at it. It was a perfectly good goal.
"We shouldn't be conned. I have to say, if my son stays down for three minutes and he needs his 10 mates to help him up, he won't get any food.
"We weren't conned, the referee was."
Those comments irked Mourinho, who went back at his successor at Old Trafford.
"First of all, let me tell you something. I'm very surprised after the comments Ole made on Sonny," he responded. "You don't ask me about it. I spoke to Ole already about this because I met him a few minutes ago.
"If that's me telling that player A, B or C from another club, it was my son I wouldn't give him dinner or something like that, what would be the reaction?
"It's very, very sad and I think it's really sad that you don't ask me about it. It's really sad that you don't have the moral honesty to treat me the same way you treat others.
"Sonny is very lucky his father is a better person than Ole. I am a father and as a father you have to always feed your kids, it doesn't matter what they do. If you have to steal to feed your kids, you steal. I'm very, very disappointed.
"With me, like we say in Portugal, bread is bread and cheese is cheese. I told Ole already what I think about this and I have to tell you I'm very disappointed that in five, six, seven questions you ignore the dimension of that comment."
