Aston Villa's Conor Hourihane went into the book for a late challenge soon after Jack Grealish's goal.

Suddenly Villa are competing all over the park.

Grealish whips into a lovely ball from the right, but it eludes everyone.

Enda Stevens pulls a shot wide across the face of goal as Sheffield United press for a winner.

The Blades would briefly move up to seventh with a point, but they are likely to lose ground in the play-off race later this afternoon if they can't find a third goal.

John Fleck is on the hunt for his second goal of the afternoon, but his shot is blocked by an onrushing Barnsley defender.

Who will make the decisive contribution in the final 10 minutes?

There's the hat-trick of Norwich bookings.

Dennis Srbeny cynically brings down Jack Grealish as the Villa man strides forward. Conor Hourihane cannot create anything from the free-kick.

Harrison Reed becomes the second Norwich player to get a caution.

Villa waste the subsequent free-kick and then another set-piece comes to nothing.

Twenty five minutes left to play, plus stoppage time.

Garry Thompson
Ex-Aston Villa striker on BBC WM 95.6

It's a massive hill for Villa to climb now.

The substitutions needed to be made but maybe it's a bit too late - should they have been made at half-time?

They have got no choice but to go for it to get three goals.

Villa's Jack Grealish plays a fine ball down the channel, which Scott Hogan manages to collect but he is crowded out.

Norwich have had very little to worry about so far. It's all been way too easy for the home side.

There's already been more urgency about Villa. With more than 30 minutes remaining they have time to get back in it.

But three goals is a huge ask given the way things have panned out so far.

Image source, Rex Features

George Marshall: Ten seconds to go to secure Football League status and on-loan goalie Jimmy Glass heads in late corner for Carlisle United to win 2-1

Dan Casey: I was lucky to be living in Frankfurt in 2003 when Eintracht scored 3 in last 10 mins (including two in injury time) on the last day to nick promotion off local rivals Mainz (managed at the time by Jurgen Klopp!). Incredible celebrations in the city!

Jose Morais responds to Sheffield United's second goal with his first change of the game.

Striker Tom Bradshaw replaces midfielder George Moncur, who started brightly but has faded as the game has gone on.

A signal of intent by Aston Villa as Steve Bruce makes a double change.

Lewis Grabban and Jonathan Kodjia are both on for Villa as they look to chase the game. Both were being readied before the second home goal.

John Fleck is involved again as Sheffield United come close to taking the lead for the first time.

The midfielder's corner is nodded down by Leon Clarke into the path of Chris Basham, whose shot is deflected off target.

Barnsley have their backs against the wall now with 27 minutes of the 90 to play.

The delivery from the Villa free-kick is average and Norwich defend it easily. The atmosphere at Carrow Road is subdued.

Villa surely need to up the tempo.

Norwich are first to show on the resumption. They work the ball right to left, and then back out to the right, continually probing.

But Villa stand firm and now have a free-kick in Canaries territory.

Off we go for part two. Can Villa turn this around?

No changes. John Terry is fit to continue for the visitors.