banduan -- couldn't agree more.
There was a mediocre cross that Liverpool cleared, and United didn't have a player within 20 yards of it. It took Martinez a good 5 seconds to get there, at which point any chance at easy possession was lost. I don't care if you're playing a 3-5-2 or 3-4-3, you need to be able to step up field to find the ball.
By the way, doubt he's able to be pulled away, but I think there's a player in Mainoo. He'd be sharp at our left 8.