Austria are labelled as one of the dark horses of Euro 2016 while Portugal are referred to as one of the favourites in the competition. The two sides clash in their second Group F match of the competition on Saturday.
Cristiano Ronaldo's Portugal, who recorded a 1-1 draw against Iceland in their previous game of the group, have no major fitness worries ahead of the match but head coach Fernando Santos could think of rotating his squad and giving a start to the likes of Renato Sanches, Ricardo Quaresma and Jose Fonte.
While Fonte was an unused sub for Portugal in the previous game, Sanches and Quaresma made their appearance late in the match and the midfielders tried their best to bring in the attacking flair but just couldn't come out successful in getting the winning goal.
Danilo remains the only injury worry for Santos, as the Porto midfielder has a back injury and could miss out on the game. In that case, William Carvalho, reportedly being scouted by the Premier League clubs, could feature in the match.
The occasion also marks a milestone for Portugal and Real Madrid superstar Cristiano Ronaldo, who will be bagging his 128th cap for the Portugal national football team, overtaking Luis Figo.
For Austria, Bayern Munich fullback David Alaba could be deployed in a more attacking role given set-piece specialist Zlatko Junuzovic's ankle injury. However, with the likes of Ronaldo and Nani expected to cause much of the trouble from the flanks, Austria coach Marcel Koller needs to take a calculated call on whether to field Alaba as a winger or a fullback in the game.
Centre-back Aleksandar Dragovic is suspended from the game for picking up two yellow cards in Austria's previous game against Hungary. The Dynamo Kyiv could be replaced by the experienced Sebastian Prodl, who was an unused substitute in the previous match.
Possible starting XI
Portugal: Rui Patricio; Vieirinha, Ricardo Carvalho, Pepe, Guerreiro; Andre Gomes, Danilo / William Carvalho, Joao Moutinho, Quaresma; Nani, Cristiano Ronaldo.
Austria: Almer; Klein, Prodl, Hinteregger, Fuchs; Alaba, Baumgartlinger; Harnik, Sabitzer, Arnautovic; Marc Janko.