Alexis Sanchez finds Luke Shaw on the left, but the full-back can't quite square to Lukaku.

That would have been an easy tap-in for the Belgian.

Alexis Sanchez is at the heart of everything, he receives the ball and turns Florent Hadergjonaj, before being fouled by Jonathan Hogg.

United win a free-kick but Sanchez wastes the opportunity.

Image source, Getty Images

Manchester United have started with real purpose in this second half.

Tommy Smith is booked for a foul on Sanchez.

Alexis Sanchez goes close to opening his United account but his left-foot shot is blocked by Tommy Smith.

Just seen a great banner at Old Trafford with a picture of Sanchez and his dogs, with 'Welcome to Manchester, Alexis, Atom and Humber'

Image source, Rex Features

United make no changes at half-time.

But their attack is looking a bit narrow at the moment looking at their average positions.

Image source, Opta

Simon Stone
BBC Sport at Old Trafford

Alexis Sanchez got booked a few seconds before half-time for a petulant foul, not long after an arm-waving complaint at not getting a free-kick.

I have a feeling the Chilean is going to be involved in a key moment here. And it might not necessarily be a goal.

Not a classic by any means. United on top but they have nothing to show for it.

Alexis Sanchez is booked for a foul on Florent Hadergjonaj.

You get the sense the Chilean is getting a bit frustrated.

Image source, Reuters

Huddersfield with a rare attack and they win a corner, United clear and go on the attack.

This is as one-sided an affair as you could imagine, but United just aren't creating any proper chances.

Image source, Opta

Juan Mata, who has been excellent today, is hauled back by Collin Quaner.

The free-kick is taken by Sanchez.

He floats it to the far post and Chris Smalling reaches it, but he's offside.

Image source, Getty Images

Marcos Rojo puts Tommy Smith's cross behind for a corner, their first of the game. But the opportunity is wasted.

Jesse Lingard then sprints away and brings Jonas Lossl out of his goalmouth, but the keeper does well to prevent any danger.

Early change for the Terriers.

Philip Billing is off for Aaron Mooy.

Suspect that is because Billing is on a yellow and fouling everyone.

I wouldn't say Romelu Lukaku has been heavily involved so far in this game.

This is his touch map.

Image source, Opta

Alexis Sanchez and Juan Mata are on the same frequency today.

The Chilean plays in the Spaniard but he can't quite get his shot away.

Image source, PA

Alexis Sanchez links up well with Juan Mata and then unleashes a fierce drive from outside the box but it is well saved by Jonas Lossl.

Mata goes after the rebound and slides in studs up on Collin Quaner and is booked.

Image source, Rex Features

Rajiv van La Parra is down near the touchline, but United play on.

Huddersfield clear the danger and the ball comes Van La Parra's way and he suddenly jumps up and goes on the attack.

Jose Mourinho is incensed.

Philip Billing goes in the book for a challenge too far, this time on Marcos Rojo.