Jose Mourinho can't have too many complaints about the start to his second season in charge of Manchester United.Only goal difference separates the Red Devils from their cross-city rivals, Manchester City, as the two teams sit joint top of the Premier League table with 19 points from seven games.However, while Mourinho is in a great position to win the league this season after doing so on three occasions with Chelsea, an injury crisis is lingering over him at Old Trafford.Key midfield man Paul Pogba has been sidelined with what Mourinho described as "long-term" hamstring injury, while Michael Carrick has yet to appear this season following a niggling knock.An ankle problem had ruled out Romelu Lukaku for Belgium against Bosnia-Herzegovina on Saturday, and now Mourinho faces a midfield crisis after his United teammate Marouane Fellaini limped off after 29 minutes.The 29-year-old went down after sustaining an injury to his left knee, which doesn't bare well for United as they prepare to face rivals, Liverpool, next weekend.It has not yet been made clear how serious or the length of time in which Fellaini could be sidelined, but the initial signs are worrying for United.
Ander Herrera could partner Nemanja Matic in the centre of midfield, while Juan Mata and Daley Blind remain alternative options for Mourinho. But Fellaini's absence remains a big blow.The Belgian has scored three goals in six league appearances for the Red Devils this season, with just three of those starts, proving to be far more important to Mourinho than anticipated this campaign.
United fans react to Fellaini's injury
And United fans couldn't believe how times had changed in the wake of Fellaini's expected absence.
Fans vent anger at Martinez
The Red Devils faithful were also left angry by Belgium manager Roberto Martinez's decision to include the midfielder in the first place; having already qualified for next summer's World Cup.
Indeed, Mourinho may well be feeling the same way in the aftermath of Belgium's goal-filled 4-3 away win in Sarajevo.
Fellaini's future was cast into some doubt when the Portuguese arrived at United but has somewhat risen to prominence in the recent absence of Pogba.
Now the United boss will be sweating on the fitness of Fellaini, as well as Lukaku, before they head to Anfield for Saturday's lunch-time kick-off.