One of the biggest games in Premier League history takes place on Monday night.
And while the two teams are no longer gunning for the title, as they have done in previous years, Manchester United versus Arsenal is always a big occasion.
Manchester United can go up into the top six with a win, while Arsenal will be hoping to move into fourth place with victory at their old adversaries.
But the Red Devils have injury problems.
Paul Pogba looks likely to miss out, while frontmen Marcus Rashford and Anthony Martial are also missing.
That could mean 17-year-old Mason Greenwood could start only his second ever Premier League game.
"It might be," Solskjaer answered when asked if the youngster would retain his place (via Manchester Evening News ).
"Because he's proven when he's been on the pitch, in the last two games he started against Astana and Rochdale, when you get him in the box he's dangerous.
"What's pleased me about him in the period we're in is he doesn't turn down chances to finish, when you're not 18 yet and you keep trusting yourself, he gets the chances."
And former England women's forward Sue Smith believes United boss Solskjaer does not have a choice but to play the wonderkid.
Speaking on Sky Sports News, Smith said: "I think you can probably start off with the injuries and how that's going to affect Manchester United. Potentially Greenwood could start, without Rashford, without Martial, he's probably their only option.
"He's a young lad, it's an opportunity for him, he did score against Astana and Rochdale, so he'll come in with confidence and he'll think this is an opportunity, but Arsenal's a different proposition to both those sides.
"It's a huge step up for him."
