Probably his energy/pressing, great touch, quick passing to increase the tempo of the game and picking out a man in front, but the more creative players who will(should) create chances, and do little 1-2's to get around the opposition, and his ability to get stuck in and win the ball back. He's a very good outlet to pass the ball to when the midfield is under pressure as he is a quick passer and one little pass out to the right back from him and a few of the opposition are out of position and we can start an attack. He's a pretty creative player himself of course, and he's good at dribbling past a couple of defenders, but it's different in the way Memphis would, and it's more through his smart movement that he gets in a position to score, he picks his moments, compared to Memphis who will get in a goalscoring chance a few times a game. Van Gaal likes his #10's to be the main or second main source of goals/assists, and have all of our attacking play go through them basically. Herrera is a class player, but it just doesn't suit him to play there especially in our system. At least not from the start. He'd just be much better off playing deeper where he can influence the game more.
Okay. I agree with some of the strengths to his game.
Obviously van Gaal knows 100 times more than me, but I still don't like they way he's setting us up at all.
We have two sitters, two forwards who can't create (and would rather stick to getting the final touch), and two wingers who can't beat their man. It's as if we're set up to keep the ball, create very little, and if we bundle the ball into the goal somehow, through having two forwards... then it's job done.
When you suffocate teams, I think it makes sense to have someone like Herrera ahead of the sitters. He's our most creative player, he can sit on the ball, he isn't focused on scoring goals. I also think he can dribble past men better than Memphis in the congested centre.
Memphis and Rooney as a front two would be brilliant, if we played counter-attacking football, because it requires less creativity and holding of the ball.
I guess we'll have to see who else comes in, and where they all line up, but the team he chose on Saturday was always going to struggle to create chances. I don't know... maybe he's planning to release Schweinsteiger.
Edit: and I don't see Mata as an option in the centre, because he struggles to hold the ball, dribble, create too much.