By Chris Wheeler for MailOnline
Published: 10:04 GMT, 8 November 2019 | Updated: 10:11 GMT, 8 November 2019
Ole Gunnar Solskjaer has warned Mason Greenwood that he cannot cut corners in training if he wants to be a star at Manchester United.
Greenwood underlined his potential once again with United’s opening goal in the Europa League win over Partizan Belgrade at Old Trafford on Thursday night.
It came a week after the 18-year-old striker was made to play for the Under-23s at Doncaster in the EFL Trophy instead of the senior side against Chelsea in the Carabao Cup.
Mason Greenwood needs to 'stamp his authority' on every day, says Ole Gunnar Solskjaer
Solskjaer has revealed that he decided to take Greenwood out of the firing line because the teenager’s performances in training had dipped.
‘If he’d really stamped his authority in training every single day and been the best option he would have played every game,’ said the United boss. ‘As a young boy you expect ups and downs and he’s had some downs – but I think he is on his way up again.
‘He needs to learn the man’s game. He’s gone up from the Under-18s last year, now he’s training with the first team every day and you can’t just turn that switch on and off. You’ve got to perform every day if you are going to be accepted by a group like this.
‘Mason is going to have a very big career, but sometimes is not the