Sevilla have been much better in the recent times. Maybe they are still struggling against the biggest teams of the league. But they are at least able to perform better in the remaining ones and they are finally getting wins as well. They need to keep this going to finish the season at a safe position in the standings too. The Europa League win should also be some help.
Osasuna are a good team but Sevilla should be able to benefit from the home advantage in this game. I think they will win this game by one goal.