Liverpool striker Hugo Ekitike has suffered a suspected Achilles injury and there are fears he could be out for at least six months.
Sky Sports News understands the player is set for scans to determine the full extent of the injury, which is not yet known.
The worst-case scenario is an absence as long as nine months - but it will take more analysis to determine a timeline for his recovery.
Ekitike came off with a serious leg problem after 31 minutes of the 2-0 loss at Anfield - which confirmed a 4-0 aggregate quarter-final defeat to the reigning European champions.
Ekitike picked up the injury just as Alexander Isak returned from his serious leg injury, with the British record transfer making his first start since fracturing his ankle in December.
Liverpool did not comment when contacted by Sky Sports News.
Just the Premier League left! Liverpool's remaining matches
April 19: Everton (A), live on Sky Sports, kick-off 2pm
April 25: Crystal Palace (H), kick-off 3pm
May 3: Manchester United (A), live on Sky Sports, kick-off 3.30pm
May 9: Chelsea (H), kick-off 12.30pm
May 17: Aston Villa (A), kick-off TBD
May 24: Brentford (H), kick-off 4pm