The former Crystal Palace boss said that it was a "pity" Mourinho is Rashford's manager, believing he has stunted the Englishman's development since taking over at United.
The former Dutch global had praised Rashford and said it was a "pity" that he plays for Mourinho, who only cares about results, and not a manager who would continue to play him even if he has a bad game or two.
He does not have a reputation for promoting youth but, while Saturday marked Rashford's first league start of 2018, Mourinho cited the number of games that 20-year-old forward has played in his two-season reign: 93 and counting.
"It is a special game because it would be a very important step for the club. I would say he was in the top five with more matches for two seasons", Mourinho said.
United face Sevilla in the second leg of their last-16 Champions League tie on Tuesday.
Mourinho, clearly angered by De Boer's comments, fired back at the ex-Netherlands star by branding him the Premier League's worst manager of all-time.
If he was coached by Frank, he would learn how to lose because he lost every game. "The best thing that can happen to a kid is to have experiences and Marcus is having them". "But he's so talented and you want to see him play every week". "He wants to get results", De Boer said on BT Sport'sPremier League Tonight on Saturday.
"I'm not upset with the fans about Rashford", Mourinho said after the match.
Marcus Rashford scored twice in the first half and, although Eric Bailly's own goal prompted a tense finale, Jose Mourinho's men were deserving winners in the end. I'm really happy too.
De Boer is not the only pundit to question Mourinho's conservative approach when it comes to Rashford who is vying for a starting place alongside the likes of Romelu Lukaku, Anthony Martial and Alexis Sanchez. "No, of course not but he's a player we trust and I told him that before the Liverpool match", added Mourinho.
"He started and had a good match and I'm not just talking about goals". Not many were expecting you to start against Liverpool and he had a good match not just about scoring goals.
Trump's new tariffs just got a brutal review
Finance Minster Bill Morneau also said recently that Canada has been "firm" in its opposition to tariffs . "Highly restrictive. Millions of people addicted and dying, Trump alleged. "I don't think we'll have a trade war", the president said.
Trump wants to rely less on White House staff
The bill slashed taxes for 90 percent of working Americans and reduced the tax burden for businesses across the board. Last week Gary Cohn resigned from that role after Mr Trump's announcement of tariffs on steel and aluminium imports.
Tesla raises prices at its Supercharger stations
Finally, Private Capital Advisors Inc. acquired a new position in Tesla in the fourth quarter valued at approximately $318,000. State Of Tennessee Treasury Department invested 0.25% of its portfolio in Mastercard Incorporated (NYSE:MA). (NASDAQ: TSLA ).
Buhari to query IGP Idris over Benue
Governor Samuel Ortom said the recent attacks had displaced 170,000 people with children of school age constituting 60 per cent. Akume expressed the anger of the Tivs with the president over the way and manner he handled herdsmen killings in the state.
Djokovic rues shock Indian Wells exit
Djokovic scrambled to win the second set but looked rusty on stadium court, making 62 unforced errors compared to 29 for Daniel. South African seventh seed Kevin Anderson also prevailed in his second round match, 7-5 6-4 over Russian Evgeny Donskoy.
Wa-hoo! Google Maps transforms for 'Mario Day'
To celebrate Mario Day (Mar 10), you can now have the famous plumber as your navigator in Google Maps for a week. As a historical sidenote, Google and Nintendo have worked together before for these kinds of fun stunts.