I think we're going to see two teams who are mostly concerned about not losing. A draw is a good result for United, so it makes sense to go for a cautious approach. Turned out eventually that a draw was a good result against City, after picking up wins in the following games. So Ole will probably want a repeat of that.
Liverpool - who aren't on great form by their recent standards - will be expecting United to drop points throughout the season, so they'll mostly be concerned about United getting an even bigger gap at the top of the table. If they can keep the gap at 3 points, the title race is still very much on, and it's likely they can take top spot before the season ends.
So no reason for either team to really go for it here, and I predict a drab 0-0 draw. McTominay and Fred as the midfield pairing, and a measured amount of moaning (but taking the result) on RedCaf after the match.