Ole Gunnar Solskjaer urged Manchester United's youngsters to be more ruthless after they survived a League Cup scare against third tier Rochdale.
Solskjaer was subjected to calls for his sacking on social media after United needed a 5-3 penalty shoot-out win to edge past Rochdale after a limp 1-1 draw at Old Trafford.
Following Sunday's chastening Premier League loss at West Ham, United were in trouble again when Rochdale's 16-year-old Luke Matheson cancelled out Mason Greenwood's opener.
United keeper Sergio Romero saved the day by denying Jimmy Keohane in the shoot-out, earning a last 16 trip to Chelsea.
It was a let-off for Solskjaer's men and a further reminder of the need to make their chances count, having converted just one of their 31 shots.
"We go 1-0 up in many games. Today it's again go 1-0 up and you think 'go on then, get the second' which is the key now and that is learning curve for these boys as well," said Solskjaer, whose side are a lowly eighth in the Premier League.
"We need to go for a second. At this club you don't just sit back and hope that's enough good. If you settle for good enough, that's not what we want."
"He can go both ways, which is for me fantastic and you can just see he has got quality and he will get his share of games."
"We play them first game of the season this year. We played them in the FA Cup last year and it slots into a couple of weeks with loads of travelling."
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