Leeds United head coach Marcelo Bielsa acknowledged "it is impossible not to be worried" by the prospect of relegation after his side went down 4-2 to Manchester United.

Headers from Harry Maguire and Bruno Fernandes had United ahead on Sunday, before Rodrigo and Raphinha struck in the space of two minutes to level things up in the second half.

But substitutes Fred and Anthony Elanga secured victory for Ralf Rangnick's team to leave Leeds winless from their last four Premier League outings, and they sit just five points above the relegation zone.

Everton and the resurgent Newcastle United are the two teams immediately below the 15th-placed Leeds, propping the gap between Bielsa's side and the last relegation spot occupied by Watford.

Burnley, who are in 19th, are six points behind the Whites but also boast two games in hand as they look to make a late survival push following a 3-0 win at Brighton and Hove Albion on Saturday.

With key players Kalvin Phillips and Patrick Bamford still injured, and Liverpool and Tottenham as Leeds' next opponents, Bielsa recognises the difficult task at hand.

"It is impossible not to be worried," Bielsa told Sky Sports. "We have conceded 50 goals. Do you think I cannot be worried? How can I not feel responsible?

"We have to defend better. We are missing Kalvin Phillips and Robin Koch was substituted and we could not count on Pascal [Struijk] in midfield because he went back into defence. 

"Not being able to come with the three defensive midfielders we have, there is a weakness in the recovery of the ball.

"In the first half we started well and ended well but didn't manage to score. In the moments we lost dominance they scored.

"After we got back level we had the chance to go 3-2 up and straight away they went up and scored again. 

"We played better trying to get back into the game than when we were trying to keep a result but something has repeated that is difficult to resolve."

It was the fourth time Leeds have conceded at least four goals in a Premier League game this season – no side has done so more often so far this term.

Arsenal booked their place in the EFL Cup quarter-finals after a 2-0 win over Leeds United thanks to goals from Calum Chambers and Eddie Nketiah.

Chambers headed Arsenal in front 10 minutes into the second half just moments after he had come on to the pitch as a substitute.

Nketiah scored Arsenal's second 14 minutes later when he capitalised on a weak ball back to Leeds goalkeeper Illan Meslier.

Leeds, who had chances of their own in the first half, were unable to find a response as Mikel Arteta's side saw out the game without further alarm.

Arsenal showed the early intent with Nketiah's shot going just wide while Sead Kolasinac struck the side netting with a low angled attempt.

Leeds weathered the spell of pressure and then had two chances of their own before the half hour; Daniel James tamely shot at Bernd Leno when sent clear before the German produced a superb diving save to keep out Jack Harrison's rasping half-volley.

Leno was the busier of the two goalkeepers in the remainder of the half as he saved a low deflected shot from James, and was relieved to see a Tyler Roberts shot fly wide.

Arsenal were dealt a blow shortly after the interval when Ben White limped off injured, but they soon had reason to celebrate when his replacement Chambers scored with his first touch.

A corner from Smith Rowe was nodded back across by Nicolas Pepe to Chambers who saw his header blocked by Meslier but goal-line technology deemed the ball had crossed the line.

Nketiah added a second with just over 20 minutes left when he latched on to a backward header from Liam Cooper, nudged the ball over the outrushing Meslier before he shinned it into the empty net.

The goal stifled any hope of a Leeds comeback as Arteta's men saw out the remainder of the game and secured their spot in the last eight.

Brentford captain Pontus Jansson heaped praise on Leeds United manager Marcelo Bielsa after the Bees were promoted to the Premier League for the first time.

Ivan Toney's penalty, swiftly followed by a fierce first-time strike from Emiliano Marcondes, secured a 2-0 win for Brentford in the Championship play-off final against Swansea City.

Brentford lost to Fulham at the same stage last year, Jansson's first with the club after leaving Bielsa's Leeds, who were promoted as champions and have this term enjoyed a spectacular return to the Premier League, finishing ninth.

But, speaking to Sky Sports, Jansson explained how what he learned from Bielsa played a pivotal role in Brentford ending a 74-year absence from the top flight.

"Last year a lot of Leeds fans was against me, this year so many Leeds fans have been with me and with Brentford, probably because they are already there and they wanted me to come and join them," Jansson said.

"I love Leeds, Brentford fans know I love Leeds, Leeds is one of the favourite clubs I have, of course I love Brentford as much, I'm so proud, I'm so happy, I could go home to Sweden and retire because this is what I've dreamt of for such a long time since I came to England, finally of course I will not go home, I will stay here and hopefully play Premier League football.

"I'm so thankful to Bielsa for what he gave me at Leeds, he gave me so much knowledge that I actually brought to Brentford and Brentford was so willing to listen to me and my ideas that I took from Bielsa.

"I thank him a lot because he's one of the best coaches in the world. People think mine and his relationship is not the best but it is, I'm so thankful to him."

Brentford scored 79 goals in the 46-game Championship season, the most in the division, increasing the tally for the campaign to 84 with their efforts in the play-offs.

The Bees scored 73 non-penalty goals across 49 matches, underperforming their xG of 74.4 but playing an expansive style of football reflective of what Jansson experienced at Leeds.

Toney was the talisman behind their promotion, his spot-kick taking him to 33 goals in a remarkable campaign. Twenty-two of those goals came from 135 non-penalty shots with an xG of 20.7.

Asked about what he could do in front of goal in the top tier, Toney replied: "I don't know, who knows what's to come.

"I'm a Premier League striker now and I can't wait to score goals in the Prem."