Decent run from Granada sub Darwin Machís from the halfway line, he eventually has a shot blocked for a corner.

Victor Lindelof catches Roberto Soldado in the centre circle but it's a rare United foul that doesn't end up in a yellow. Just as well because Lindelof is one booking from a ban I think.

Gabriel Martinelli tries a cheeky diagonal ball into the box for Emile Smith Rowe.

Nice angle but too much pace on it.

Granada keeper Rui Silva hasn't made a save yet. I won't say hasn't had to make a save because he obviously could have made one...

The corner is dealt with but Arsenal keep possession. Nicolas Pepe finds Gabriel Martinelli but his fierce strike is tipped over the bar!

Slavia Prague are going to make a few more changes as they launch a clearance from the corner upfield.

Bernd Leno is practically on the halfway line as Pierre-Emerick Aubameyang wins another corner...

Close. Alex Telles whips in an excellent cross from the left. You'd expect Edinson Cavani to throw himself at it but he must have judged it was just too far to reach.

Those changes have made a difference already for Arsenal! The intensity has shot up. Arsenal have a corner on the right.

Image source, Getty Images

Granada changes now. Darwin Machís and ex-Watford man Dimitri Foulquier replace Carlos Neva and Kenedy, who was their biggest threat really.

Almost an immediate impact.

Emile Smith Rowe and Nicolas Pepe link-up nicely with some one-touch passing on the right.

It's drilled in but Pierre-Emerick Aubameyang pokes it wide from the near post.

Mikel Arteta launches the changes.

Pierre-Emerick Aubameyang, Nicolas Pepe and Mohamed Elneny are all coming on.

Bukayo Saka, Alexandre Lacazette and Thomas Partey are off.

United make a change. The only one of United's four players to be booked and not be banned for the second leg, Paul Pogba, is replaced by Nemanja Matic.

Another huge chance wasted - this time for Slavia Prague!

They get away down the left, it's cut back into the middle, only half-cleared by Arsenal and Petr Sevcik, unmarked in the box, smashes it wide from close range.

Roberto Soldado turns Harry Maguire, who pulls him back. That's a booking... and that means he misses the second leg.

Maguire, Luke Shaw and Scott McTominay are all out next week now.

Much better from Arsenal. They put pressure on high up - forcing the keeper into another dodgy kick before eventually winning a throw-in.

Mikel Arteta applauds the effort.

From the throw-in, it's fizzed across the box before it comes to Thomas Partey on the edge. He fires it JUST wide of the right post!

Mason Greenwood loses the ball in midfield, Granada break and Victor Lindelof does well to block Carlos Neva's cross.

A couple of chances for Yangel Herrera, but the first one is blocked and the second one is over the bar from outside the box.

Willian is off. On comes Gabriel Martinelli. Just under 20 minutes to make a difference.

Substitute Jan Kuchta dances into the box after shrugging off Gabriel. The Arsenal defender does well to recover and gets an important block in.

The hosts then try to break but the referee whistles for a foul without waiting for advantage. He apologises immediately.