Carvalho was on the pitch together with the rest of his teammates in the 15 minutes in which the media were present. They trained at the Portuguese FA's HQ in Oeiras (Lisbon).
The Betis midfielder got injured on 3rd October and missed Betis' game against Eibar the following day.
Portgual will host Luxembourg at the Jose Alvalade in Lisbon followed by a battle between the top two in the group between Ukraine and Portugal in Kiev. Ukraine are top while Portugal are second.