The 32-year-old midfielder tested positive for coronavirus after leading his side into their warm-up game against Portugal on June 4, but was cleared to meet up with the rest of the squad before they left for Seville on Friday.
The Barcelona player, however, does not face Poland after being unable to train with the group since he first tested positive.
Here is how the two sides will shape up…
Spain vs Poland starting lineups
Spain XI: Simon; Llorente, Laporte, Pau Torres, Alba; Koke, Rodri, Pedri; Gerard, Morata, Olmo
Poland XI: Szczesny; Bereszynski, Glik, Bednarek, Puchacz; Klich, Moder; Zielinski, Jozwiak; Swiderski, Lewandowski
Goalkeepers: David de Gea, Robert Sanchez, Unai Simon
Defenders: Aymeric Laporte, Jose Gaya, Jordi Alba, Pau Torres, Eric Garcia, Diego Llorente, Cesar Azpilicueta
Midfielders: Marcos Llorente, Sergio Busquets, Rodri, Pedri, Thiago, Koke, Fabian
Forwards: Dani Olmo, Mikel Oyarzabal, Gerard Moreno, Alvaro Morata, Ferran Torres, Adama Traore, Pablo Sarabia
Goalkeepers: Lukasz Fabianski, Wojciech Szczesny, Lukasz Skorupski
Defenders: Jan Bednarek, Bartosz Bereszynski, Pawel Dawidowicz, Kamil Glik, Michal Helik, Tomasz Kedziora, Kamil Piatkowski, Tymoteusz Puchacz, Maciej Rybus
Midfielders: Przemysław Frankowski, Kamil Jozwiak, Mateusz Klich, Kacper Kozlowski, Grzegorz Krychowiak, Karol Linetty, Jakub Moder (Brighton), Przemyslaw Placheta, Piotr Zielinski
Forwards: Dawid Kownacki, Robert Lewandowski, Arkadiusz Milik, Karol Swiderski, Jakub Swierczok