Liverpool defender Daniel Agger could face a long time out of action, according to Reds manager Brendan Rodgers.
Agger was injured in a clash with team-mate Glen Johnson and stretchered off after the right-back subsequently conceded a penalty that Robin van Persie converted to seal Manchester United s 2-1 victory over Liverpool.
After the game Rodgers revealed that the Liverpool physios suspected that the 27-year-old had suffered damage to the knee and did not sound hopeful about his prospects of a quick return to action.
Daniel Agger we ll need to wait and see, he told reporters.
It didn t look so good with his knee, and some of the medics were saying he may have a problem with his medial ligament, but we ll to assess that over the next 24 hours and look at it again tomorrow.
The duration of Agger s stay on the sidelines will depend on the extent of the damage done to the medial ligament.
Johnson was coincidentally ruled out for three months of the 2009-10 season after suffering a tear to the same area.
The injury that ended Nemanja Vidic s 2011-12 season in December, meanwhile, was initially suspected to be a medial ligament problem but was later revealed to involve additional and more serious damage to his cruciate ligament.
