Jürgen Klopp remains hopeful that Alberto Moreno's injury will not see him spend a lengthy time on the sidelines.
The left-back was absent from the Reds' Europa League second-leg away at Manchester United on Thursday night after a hamstring complaint sustained in training the previous day.
Liverpool still managed to progress to the next round of the competition as James Milner deputised for the defender at Old Trafford, as Philippe Coutinho's breathtaking effort sealed a 1-1 draw and a 3-1 win on aggregate.
The Spaniard has since been sent for scans which have confirmed Moreno's injury is not a serious one, with Klopp insisting he has not yet ruled him out of featuring against Southampton in the Premier League this weekend.
However, an initial scan has shown no damage and Klopp says Moreno has yet to be ruled out of Sunday’s Premier League trip to Southampton.
Reds must wait for results, says Klopp
"I don't know yet because we have to wait as long as possible to do the next scan," Klopp responded when asked by reporters how long Moreno would be out for.
He revealed that the first scan they did after the training session in Manchester "showed nothing" but he admitted that Moreno "is a player who really ignores pain" and therefore they "couldn't take the risk" of playing him given that "he felt it when he tested it."
The German said that the player "will have another scan" which will reveal a "much clearer" picture as to whether "there is something or not."
He said that "if there is nothing visible" then there is a possibility that Moreno will be tried for Sunday's game, but admitted: "I don't know yet."
Moreno's first-team place under threat?
Moreno's inconsistent form and often lacklustre defensive performances have come in for criticism in recent weeks, with the return of Scouser, and fans' favourite, Jon Flanagan - who signed a new contract with the club earlier this week - providing extra competition for places.
It is expected that Flanagan will play on Sunday if Moreno is unavailable, with the defender having been left out of the 23-man Europa League squad.
Instead of playing against the Reds' bitter rivals, he was in action for 45 minutes for the Under-21s as they crashed out of the U21 Premier League Cup at the semi-final stage, losing 4-3 in extra-time to West Ham United.