Ole Gunnar Solskjaer: 'I have no doubts about Mason Greenwood'

But the 19-year-old, who joined Phil Foden in being sent home shortly after September's senior debuts in Iceland for breaching the bio bubble, has yet to reach last season's levels, netting twice across eight appearances.

"You have to take a step back sometimes," manager Solskjaer, who knows a thing or two about scoring for United, said. "The boy's only 19 and he's had a fantastic year.

"If we go a year back, I left him out of the Carabao Cup against Chelsea. Mason stayed back and played against Doncaster in the Checkatrade (Trophy) to get game time and that's how far he's come.

"Now he's got 19 goals for the first team, he's made his England debut, he scored on his first Under-21s game. He's had a fantastic development.

"Of course the headlines are going to be there about him when he scores, (or) if he doesn't play.

"Everyone's allowed to not be well and if you're not well, you can't train.

"He's now stayed away, he's been away eight or nine days from training. We're just starting building him up again.

"I have no doubts about him. He's got a very good head on him and his talent is there for everyone to see."

Saturday evening's return to Premier League action against West Brom may well come too soon for Greenwood, with Solskjaer saying "he'll be back soon".

The United boss has had a variety of injury headaches to contend with recently but the Norwegian is positive about his options as they look to secure a first home league win of the campaign.

"The short version is Luke Shaw, Jesse Lingard and Phil Jones are the only ones who didn't join in parts of the training today," Solskjaer said.

"Then there are different stages. Some of them had recovery after internationals on Wednesday and travels. Some are just working back after illness and fitness and we'll make a decision tonight.

"But most of them have joined in today and then some joined in yesterday, so it's looking good."

Marcus Rashford trained for the first time on Friday after a shoulder complaint sustained at Everton before the international break, while Victor Lindelof's ongoing back complaint needs to be assessed before the game.

Marcos Rojo and Eric Bailly are not fit enough to return against the Baggies – a match which could see deadline-day signing Alex Telles finally make his league debut after a bout of coronavirus.

There had been confusion over the left-back's availability due the Brazilian Football Confederation reporting another positive test during an international break in which Paul Pogba once again made headlines.

The 27-year-old midfielder's United future always seems to come under fresh scrutiny during his periods with the France national team, with their manager this time fuelling speculation.

Didier Deschamps said Pogba cannot be happy with his playing time and positioning at United, but Solskjaer brushed aside such talk.

"Paul's had a difficult season last season," he said. "He's had Covid now (earlier in the season).

"I think those three games he played for France helps both us and Paul, and it helped France. He gets a rhythm, he gets his fitness.

"I've spoken to Paul and he certainly felt towards the end of the Portugal game and definitely the end of Sweden game he felt stronger for it.

"He played well, they qualified. I think he's only going to improve.

"Paul is, as I've said, a very important player and very important person for us.

"To have him in form and happy is going to be vital for the run that we can hopefully put together now."