Ole Gunnar Solskjaer said his young players lack the know-how to win in certain situations after watching Manchester United come from two goals down to draw 3-3 with Sheffield United.
Goals from 19-year-old Brandon Williams, 18-year-old Mason Greenwood and 22-year-old Marcus Rashford turned the game on its head at Bramall Lane as the Red Devils briefly led, but that did not stop Solskjaer from condemning his side's first-half performance.
Defeat against the Blades would have heaped pressure on manager Solskjaer, who has delivered just two wins from United's last eight Premier League matches, and the former striker sensed a lack of confidence among his players.