Liverpool's visitors next weekend, Manchester United, will arrive with limited options in midfield, after Marouane Fellaini was ruled out following a knee injury sustained while on global duty with Belgium.
There had been fears that Fellaini had suffered knee ligament damage, a far more serious injury that could have ruled him out for months rather than weeks.
Manchester United chiefs are convinced Marouane Fellaini will soon agree terms over a new contract.
Martinez suggested the injury was serious after the game, saying: "We are all anxious about Fellaini".
"We fear that there is ligament damage".
Fellaini got a knock to his left knee following a challenge by a Bosnian player in the 29th minute of the World Cup Qualifier against Bosnia and was replaced by Leander Dondocker.More news: Will take drastic steps on Catalonia: Spanish PM
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Should he be out for two weeks he will miss next weekend's Premier League trip to Liverpool.
A potential added injury to the growing list could not come at a worse time for United, who return after the global break for a crunch fixture with bitter rivals Liverpool.
Last Saturday, Fellaini scored twice as Manchester United defeated Crystal Palace 4-0. Manchester United are now placed at second position in the Premier League with six wins and one draw in seven matches.