Jose Mourinho has never been one to mince his words.
The Special One masterminded a 2-1 win over Liverpool at the weekend that saw his Red Devils move four points clear of Tottenham in the race for second place in the Premier League.
That victory came courtesy of a brace from England wonderkid Marcus Rashford with the 20-year-old grabbing his 14th goal of the season.
Rashford is far from an automatic starter at Manchester United, though, with Alexis Sanchez, Juan Mata and Anthony Martial providing stiff competition.
The arrival of Sanchez from Arsenal in January has seen fewer starts for the academy product, but he made the most of his chance on Saturday.
Holland is a place where young talent is pretty sacred and former Crystal Palace boss Frank de Boer rued the kind of development Rashford is getting under Mourinho.
Speaking on BT Sport's highlights show on Saturday evening, De Boer had said: "It is a pity that the manager is Mourinho. Rashford is an English player and you want to give him time and he may make mistakes, but Mourinho is not like that, he wants results.
"If he has one or two not good games, he puts him out. Marcus is very young and needs games, but he is so talented and you want to see him playing every week."
Oh dear. Mourinho was never going to take those comments lightly and considering De Boer only managed four games before he was sacked - with no points or no goals - he brought a rubber hammer to a gunfight.
Mourinho replied: "I read something, some quote from the worst manager in the history of the Premier League, Frank de Boer, saying it was not good for Rashford to have a coach like me because the most important thing for me is to win.
"If he was coached by Frank he would lose because he lost every game. I try to give the best to the kid.
"I have to be honest and give the credit to the people of the academy that was responsible for his formation, to [former United boss] Louis van Gaal, who was responsible for his first season.
"But if you go to his numbers and how many matches he played with me last season and this, I would say probably he's in the top five players with more matches in the two seasons."
Do you agree with Mourinho's assessment? Let us know in the comments section below.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms