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Portugal are favourites to win the inaugural Nations League, according to the coach of their semi-final opponents Switzerland, Vladimir Petkovic.
The Euro 2016 winners are hosting the four-team finals, with England facing the Netherlands in the other semi-final on Thursday.
“Portugal are certainly favourites, not just in this game, but for the tournament as a whole,” said Petkovic.
“They’re at home and are European champions.”
The four teams qualified for the finals through last year’s group stages.
Switzerland have never won a senior tournament before, but have reached the World Cup quarter-finals three times.
Petkovic added: “Portugal have the pedigree but so many times we’ve shown, and football has shown, that nothing is impossible.
“Maybe now Switzerland just need that final stamp, which we can fight for and earn against the top sides, by winning a tournament like this one.”
The final is in Porto on Sunday at 19:45 BST.
Portugal’s squad includes Juventus forward Cristiano Ronaldo, highly rated Benfica teenager Joao Felix and four Wolves players.
“It will be a very hard match, with two teams that like to hold onto the ball, that like possession,” said Portugal boss Fernando Santos, who guided his homeland to glory at the last European Championship in France.
“Switzerland also like to play long balls, utilising the characteristics of players like Haris Seferovic, then there’s [Liverpool’s] Xherdan Shaqiri, who likes to hold the ball up.
“They are full of quality players. Our job is to think about ourselves and to impose our game. The Portuguese national team, playing at home, want to bring joy to their fans.”
Goalkeepers: Beto (Goztepe), Jose Sa (Olympiakos), Rui Patricio (Wolves)
Defenders: Joao Cancelo (Juventus), Nelson Semedo (Barcelona), Jose Fonte (Lille), Pepe (Porto), Ruben Dias (Benfica), Raphael Guerreiro (Borussia Dortmund), Mario Rui (Napoli)
Midfielders: Danilo (Porto), Ruben Neves (Wolves), William Carvalho (Real Betis), Bruno Fernandes (Sporting Lisbon), Joao Moutinho (Wolves), Pizzi (Benfica)
Forwards: Bernardo Silva (Manchester City), Joao Felix (Benfica), Goncalo Guedes (Valencia), Rafa Silva (Benfica), Cristiano Ronaldo (Juventus), Diogo Jota (Wolves), Dyego Sousa (Braga)
Goalkeepers: Yann Sommer (Borussia Monchengladbach), Yvon Mvogo (RB Leipzig), Jonas Omlin (Basel)
Defenders: Manuel Akanji (Borussia Dortmund), Loris Benito (Young Boys), Nico Elvedi (Borussia Monchengladbach), Michael Lang (Borussia Monchengladbach), Kevin Mbabu (Young Boys), Jacques-Francois Moubandje (Toulouse), Ricardo Rodriguez (Milan), Fabian Schar (Newcastle)
Midfielders: Edimilson Fernandes (Mainz), Remo Freuler (Atalanta), Xherdan Shaqiri (Liverpool), Djibril Sow (Young Boys), Renato Steffen (Wolfsburg), Granit Xhaka (Arsenal), Denis Zakaria (Borussia Monchengladbach), Steven Zuber (Stuttgart), Noah Okafor (Basel)
Forwards: Josip Drmic (Borussia Monchengladbach), Haris Seferovic (Benfica), Albian Ajeti (Basel)
*Premier League players in bold