Barcelona have confirmed that Andre Gomes has suffered a leg muscle injury while on international duty with Portugal.
Gomes, who joined from Valencia in the summer for an initial fee of €35 million, has been examined by club doctors.
A Barcelona statement said: "In the next week, it will be determined when he can return to the squad.
[MEDICAL ANNOUNCEMENT] André Gomes has muscular bruise: https://t.co/NAMlhMGOl3 pic.twitter.com/wdxmUNCmQC
- FC Barcelona (@FCBarcelona) September 4, 2016
The statement added: "The medical examination undertaken this morning by the club's doctors has confirmed that the player has a muscular contusion on his right leg."
Gomes, 22, moved to the Camp Nou having been strongly linked with a move to Real Madrid.
He told Catalan station TV3 his Portugal teammate Ronaldo had congratulated him on the move and added: "He was happy for me, but now I will remain a rival of Cristiano, as I was before [at Valencia]. On the pitch there is no friendship."