Sergio Aguero will miss Manchester City's Champions League quarter-final against Lyon on Saturday through injury, says boss Pep Guardiola.
The Argentina striker had surgery on his knee in Barcelona in June but had yet to be ruled out of the resumption of the Champions League.
However, Aguero, 32, has not joined his team-mates in Lisbon for the last-eight tie against French side Lyon.
"He is still in Barcelona making a recovery," said Guardiola.
The Spaniard said he did not know if Aguero would be fit for the remainder of the competition if City progress.
If City win they will play either Barcelona or Bayern Munich in the semi-final on Wednesday.