|ESPNsoccernet: Euro 2012|
Austria captain Marc Janko is suffering with an ankle problem ahead of Friday's Euro 2012 qualifier against Belgium.
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The FC Twente striker is in prolific form, scoring 14 goals in 25 games in the Eredivisie this season, and would be a big loss for head coach Dietmar Constantini.
Janko was forced to withdraw from the Austria squad that lost a friendly to the Netherlands last month but hopes to overcome a ankle ligament injury to face Belgium in Vienna.
The 27-year-old scored 39 goals in 34 games to fire FC Salzburg to the Austrian Bundesliga title in 2008/09 and finished behind Samuel Eto'o and Diego Forlan in the running for the Golden Shoe.
Austria, who are second in Group A, five points behind leaders Germany, drew for 4-4 with Belgium in the corresponding fixture earlier in the campaign.