Zlatan Ibrahimovic
Ibrahimovic was able to walk off the pitch on Thursday but is now facing a lengthy lay-off. Reuters

Manchester United have confirmed both Zlatan Ibrahimovic and Marcos Rojo have suffered "significant knee ligament damage" as the result of injuries suffered against Anderlecht. Rojo was stretchered off during the first-half of United's 2-1 win over the Belgian side in Thursday's Europa League quarter-final tie with multiple reports suggesting the Argentina international will miss the rest of the season having suffered a ruptured cruciate ligament injury.

But the news looked even bleaker for Ibrahimovic. The 35-year-old, United's top's scorer with 28 goals in all competitions this season, jarred his knee horribly following an aerial challenge. While he was able to hobble off the pitch, reports believes the former Sweden international could be sidelined until 2018, such is the severity of his injury, while there are some suggestions his career could be curtailed completely.

Jose Mourinho noted on Friday the injuries to two key first-team players left his side "in trouble." United are still determining how long Rojo and Ibrahimovic will be out for and will gather "specialist opinions" in the coming days.

A statement from the club on Saturday read: "Detailed investigations on the injuries sustained by Marcos Rojo and Zlatan Ibrahimovic during Thursday's Europa League match have confirmed significant knee ligament damage in both players that requires specialist opinions over the coming days. Estimations of time to full recovery will only be possible once definitive treatment plans have been decided after these consultations."

Those injuries leave United desperately short at the back and up front for the remainder of the season. Eric Bailly stands as United's only fit natural centre-half, with Chris Smalling and Phil Jones not expected to return from their respective injuries until mid-May, according to Mourinho.

Marcus Rashford, who struck United's winner against Anderlecht, has found form at the right time having scored three in his last four appearances, but he will have to maintain that with Ibrahimovic's season over. United still have Anthony Martial and Wayne Rooney as options up front, but between them they have mustered just 12 goals this season.