With Liverpool having not kept a league clean sheet since August, Manchester United have been handed a boost as star striker, Romelu Lukaku has been passed 100% fit for Belgium's final World Cup Qualifier against Cyprus on Tuesday.
As much as Fellaini has been maligned during his time at Old Trafford, the figures show how desperate Manchester United will be to get him back.
Martinez defended the questionable pitch in Sarajevo, saying: "It was a very unfortunate injury for Marouane Fellaini".
Now he has returned, United's medical staff will ascertain the extent of the damage and how long he will be sidelined.
Former Chelsea defender Ricardo Carvalho sentenced to 7 months in jail
Carvalho played for Real between 2010 and 2013 under Jose Mourinho, with the offences having taken place between 2011 and 2012. Reports have stated that the Portuguese defender has been charged for tax fraud from his time playing for Real Madrid .
"Romelu Lukaku is fit", he said.
"His injury is not one that I can have the hope like I can have with others", manager Jose Mourinho said prior to the latest update.
After the Liverpool match, they travel to Portugal to play Benfica in their third Champions League group match and then are away at Huddersfield Town the following Saturday.
With Fellaini set to sit out United's trip to Anfield, Mourinho is likely to turn to the club's reigning Player of the Year, Ander Herrera, to help provide cover in the middle of the park.
This news means that Jose Mourinho will be without one of his favourite players of recent weeks, as the Belgian has completed 90 minutes in each of United's past three Premier League games.