The 21-year-old Norwich City striker was subbed off with an apparent groin injury after just nine minutes, before the Canaries went on to win their English Championship clash 2-0 on Wednesday night (Thursday AEDT) at Carrow Road over bottom of the league and already relegated Sheffield Wednesday.
Toure is now in a race to regain fitness and be available for friendlies against Cameroon at Accor Stadium, Sydney on March 27 and Curacao at AAMI Park, Melbourne on March 31.
"First look, it was not good, but let's wait and see," City boss Philippe Clement BBC Radio Norfolk post game regarding Toure's injury.
Socceroos coach Tony Popovic will already be without right-back Lewis Miller (achilles) and midfielder Massimo Luongo (ACL) for World Cup matches in Canada and the US.
Centre-back Harry Souttar is still on the comeback trail from his long-term knee injury, while Craig Goodwin, Connor Metcalfe, Hayden Matthews, Noah Botic and Cameron Devlin are also battling to get back on the pitch for their respective European and A-League Men clubs.
Adelaide United product Toure had contributed five goals and an assist since joining Norwich during the January transfer window from Danish club Randers.
The weekend's 2-1 loss to Birmingham City was the first time Toure's name was not on the scoresheet since arriving in Norfolk.
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