Now he has returned, United's medical staff will ascertain the extent of the damage and how long he will be sidelined. Martinez's decision to pick Marouane Fellaini against Bosnia was not wrong per se; it was, above anything, the poor playing surface that caused problems.
Despite the injury not being too serious, Fellaini will now miss Manchester United's crunch clash against bitter local rivals Liverpool at Anfield on Saturday afternoon. Fellaini has appeared in seven games for United and has netted four goals.
However, there was better news for United regarding the fitness of Lukaku as Martinez also confirmed that the striker is considered fit and available for selection. I haven't received a phone call from Jose Mourinho as yet'.
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.
Estonia's national team is approaching the match with a series of 4 unbeaten matches, one match in a draw with Greece 0-0 and having won three victories over Latvia 2: 1, Cyprus 1-0 and Gibraltar 6-0 this past Saturday.
There were initially major fears that Marouane Fellaini would be injured for a lengthy period, perhaps many months.
Daily fantasy football game www.oulala.com have taken a look at how United have fared with and without the Belgian going all the way back to 2013 when he joined the club.
Chris Smalling has played alongside some top talent during his time at Manchester United, and has now attempted to piece together a dream XI of Red Devils team-mates.
With a crucial domestic fixture against Liverpool approaching, United boss Jose Mourinho would have been hoping for a positive update on the 24-year-old.