Manchester United and Liverpool set up an FA quarter-final showdown after they claimed narrow wins over Nottingham Forest and Southampton respectively.

United were heading for extra-time at the City Ground before Casemiro secured a precious victory for Erik ten Hag’s team in the 89th minute.

A free kick by Bruno Fernandes was flicked home by the Brazilian to break the deadlock with the goal eventually given after a lengthy VAR check, which deemed the offside Raphael Varane had not interfered with play.

It was Casemiro’s first goal since September and helped United bounce back from Saturday’s loss to Fulham to clinch a home tie in the last-eight against rivals Liverpool.

The FA Cup draw had been made prior to the evening’s four kick-offs and Jurgen Klopp’s Liverpool youngsters again made the most of their opportunity with an excellent 3-0 triumph over Southampton.

Liverpool, fresh from their Carabao Cup final win over Chelsea, boasted a number of academy graduates in their starting line-up and Lewis Koumas, son of former Wales international Jason, opened the scoring with a deflected effort in the 44th minute.

It was Koumas’ full debut and he marked it with a goal after he collected a pass from fellow youngster Bobby Clark before his low effort was deflected in off Jack Stephens.

Southampton had squandered a number of promising openings before that point and Klopp turned to his bench to seal the victory.

With no Mohamad Salah or Darwin Nunez, Jayden Danns got the nod and produced a superb two-goal cameo.

View this post on Instagram

A post shared by The Emirates FA Cup (@emiratesfacup)

Danns’ first was a sumptuous chip after Harvey Elliott’s through ball with 17 minutes left before he wrapped up the victory when he tapped home after Conor Bradley had been denied.

Chelsea were desperate for a response after their Wembley disappointment and Pochettino’s team selection raised eyebrows with Cole Palmer and Gallagher dropped to the bench, but the latter was able to fire his team into the last eight with a last-gasp winner.

The night started disastrously for the hosts when Moises Caicedo lost possession inside his own area after Axel Disasi’s risky pass and young forward Mateo Joseph fired beyond Robert Sanchez with eight minutes played at Stamford Bridge.

Pochettino’s men were not behind for long with Caicedo releasing Nicolas Jackson, who fired into the bottom corner for his 10th goal of the season after quarter of an hour.

Mykhailo Mudryk completed the first-half turnaround with a smart finish after Raheem Sterling’s cut-back in the 37th minute but Leeds levelled soon after half-time.

Jaidon Anthony cut inside and his floated cross was headed home by Joseph prior to the hour mark to spark jubilant scenes in the away end.

It set up a grandstand finish with chances missed by both sides before Chelsea booked their place in the next round where they will host Leicester.

Wolves set up another all-Midlands tie in the FA Cup with a 1-0 win over Brighton.

Mario Lemina slid home with only two minutes played after Jason Steele fumbled Jean-Ricner Bellegarde’s cross to book Gary O’Neil’s side a quarter-final tie at home to Coventry.

Ange Postecoglou has sent a warning to the rest of the Premier League by claiming Tottenham captain Son Heung-min can be even more of a goal threat.

Son has enjoyed a superb start to the campaign, scoring eight times to sit joint-second in the goalscoring charts behind Manchester City forward Erling Haaland.

Last season proved challenging for Son with the South Korea forward only able to net 10 goals in the Premier League, but two years ago he won the division’s golden boot along with Liverpool’s Mohamad Salah and the 31-year-old has been backed to be in the race again.

Postecoglou initially played Richarlison in the middle of his front three, but switched Son into a central position against Burnley and it has helped the Spurs ace quickly move his overall Premier League tally onto 111 goals.

“It was quite obvious with Harry (Kane) leaving there was a couple of ways we could go about it,” Postecoglou reflected ahead of Monday’s visit of Chelsea.

“I don’t think you can replace Harry like-for-like. Another one of him doesn’t exist so for me to think let’s jump into the transfer market and bring in someone who can score 25 to 30 goals in the first year, I don’t think was realistic.

“What I did know about Sonny having followed him for a long time is he is a great finisher, a smart footballer, has great movement and a real capacity for working, pressing, the stuff I love my strikers to do.

“So, I just thought he would be a really good fit for us and it wasn’t the only option I was looking at, but it was definitely the one I thought would be the best fit for where we are as a team and what we needed.

“Even with him, I think the more he plays in there, the better he will get in terms of really being a goal threat in every game. For us it’s a massive asset to have.”

After Son fired blanks from his previously regular left forward role against Brentford, Manchester United and Bournemouth, he has netted eight goals in seven league fixtures as a central striker.

The long-serving Spurs player is no stranger to the role with Maurico Pochettino, who will return to Tottenham on Monday for the first time since his departure, deploying the attacker there whenever Kane was absent.

Son performed strongly as a centre forward during Spurs’ run to the Champions League final in 2019 with three goals in the quarter-finals against Man City, but ex-Australia boss Postecoglou did not use that as evidence when he first broached the idea of changing his position.

View this post on Instagram

A post shared by Premier League (@premierleague)

He pointed out: “Sonny scored against me in the Asian Cup in 2015, mate. That was enough.

“I saw enough then to know he is a decent goalscorer, so I didn’t need any more evidence.

“I have followed him for a very long time and what you are looking for in attacking players is are they a goal threat? And he’s always been a goal threat and a good finisher.”