Czech Republic captain Tomas Rosicky has returned to Prague for treatment on his Achilles tendon as doctors race to get him fit for Thursday's Euro 2012 quarter-final with Portugal.
Arsenal midfielder Rosicky aggravated the injury, which had troubled him towards the end of the Gunners' campaign, during the Czechs' second group match against Greece.
He sat out Saturday's 1-0 victory over co-hosts Poland as Michal Bilek's men emerged as surprise Group A winners to advance to the last eight.
Rosicky said on Sunday his chances of featuring in the quarter-finals were slim but will undergo treatment in Prague in a bid to boost his fitness before rejoining the squad at their training camp in Wroclaw.
Czech spokesman Jaroslav Kolar said: "He will return on Tuesday."