Real Sociedad is in a really bad situation getting a lousy out come a game after game. This has put them on close place to the relegation zone in la liga. Therefor I see that their main focus must be in their next game in the league, not this one.
Salzburg did good job in their group and are on a secure run in their national league. I trust hosts will rotate here and despite it some times happens that those fresh faces surprise, I see visitors to be over valued and therefor I will go with them.