Czech Republic captain Tomas Rosicky is unlikely to start tonight's Euro 2012 quarter-final clash with Portugal.

The Arsenal midfielder has been a doubt for the match after picking up an Achilles injury during the Czechs' 2-1 win over Greece last Tuesday.

It is understood that Rosicky will not start this evening's game, despite reports that the 31-year-old had returned to training yesterday, according to Czech TV channel CT.

Tonight's match kicks off the quarter-finals of the tournament with Germany against Greece due to go ahead tomorrow.