The 18-year-old spent the bulk of last season on loan with Blackburn Rovers, scoring seven Championship goals and adding 11 assists in a successful spell under Tony Mowbray.
This season he has forced his way into Jurgen Klopp' s plans, coming off the bench in the Premier League opener at Norwich and then starting the next two games against Burnley and Chelsea.
It was a problem he picked up during that game at Anfield that has forced him out of the Young Lions squad. He reported for international duty with the injury and after further assessment it was decided that he was unlikely to play any part against Kosovo so should return to Liverpool. Tottenham's Ryan Sessegnon has also pulled out of the squad with a knock he sustained in training.
Leeds United ‘express interest’ in transfer as ‘decision made’ over player’s future
What is happening to former Leeds United star Raphinha at Barcelona amid latest farce and deadline
Leeds United and Crystal Palace ‘monitoring’ £30m striker, Whites could be ‘offered’ Aston Villa star
Leeds United dealt Patrick Bamford injury blow at Southampton with fellow striker already out
Injury crisis deepens for Leeds United's Premier League rivals as another star limps off
Leeds defender Charlie Cresswell is part of Lee Carsley's England Under 21s squad, who are peparing for the UEFA EURO qualifier at Stadium MK on Tuesday.
With Elliott out Klopp may turn to Naby Keita for Sunday's Elland Road meeting with Marcelo Bielsa's Whites, although the 26-year-old's involvement is unclear after an attempted coup in Guinea.
He was due to play in a World Cup Qualifier against Morocco on Monday but FIFA and the Confederation of African Football decided to reschedule the game following heavy gunfire in Guinea's capital Conakry.
"The current political and security situation in Guinea is very volatile and is closely monitored by FIFA and CAF,” a joint statement of the two bodies said on Sunday.
“In order to ensure the safety and security of the players and to protect all officials of the match between Guinea and Morocco, scheduled for Monday, September 6 in Conakry, FIFA and CAF have decided to postpone this match.”
Although Keita is said to be 'safe and well' Liverpool are still yet to confirm when their player will make his return to England.
"We are in constant contact with Naby and have had regular communication via his national team management," said a club spokesperson.
"We are satisfied that he is safe and well cared for. Obviously the situation is fluid and we will maintain regular dialogue with the relevant authorities as we work to get Naby back to Liverpool in a timely and secure manner."