Manchester United looked set to beat Leicester 2-1 thanks to two goals either side of half time from Juan Mata.
The home side were even reduced to 10 men late on as Daniel Amartey was shown a second yellow card by referee Jon Moss.
But the Red Devils failed to get over the line and conceded a late equaliser in added time courtesy of Harry Maguire to draw 2-2.
And Jose Mourinho was fuming at full-time, claiming his players had conducted themselves like children and had failed to win an ‘easy’ match.
“We didn’t win because we missed incredible chances. I would say joke chances,” Mourinho told Sky Sports.
“We made a big defensive accumulation of mistakes in an easy match to win.
“I talked to the players at half time when it was 1-1 that it was an easy match to win.
“The reality is that it is 2-2. Sometimes you make mistakes and are not punished by that.”
When asked how he felt, Mourinho replied: “I feel great. One thing to feel angry as manager and another thing to feel great as a man.
“We were punished by our mistakes.
“It was an easy match to win, we did everything to win but when you lose big chances.
“Childish loss of possession, so easy. Childish in their box and childish in our box. We were punished in two points.”