Porto announced that McCarthy's place for the weekend's league match against Vitoria Guimaraes is in jeopardy.

BBC: SPORT | Football | African | McCarthy dropped to reserves

Feher suffered a heart attack during the league game between Benfica and Vitoria Guimaraes.

BBC: SPORT | Football | Other European | Benfica striker dies

Zahovic has previously played for Portuguese clubs Vitoria Guimaraes and FC Porto.

BBC: Zahovic gets unexpected break