In their last league match, Barcelona lost 4-2 to Osasuna. At that time, no one saw Osasuna as a favorite, but they won the match with a clear advantage. This match could be a rematch of the first match for Barcelona. Although Osasuna played exceptionally in the first match, I think their chances of winning this match are low.
Barcelona will not repeat the same mistake in this match because they need points to ensure the first position in the standings.
In the first leg they lost the momentum to get a win because Osasuna's performance looked more optimal, but it is different from the current condition because Barcelona is in a fairly profitable momentum.
Barcelona's chances of winning the match are quite big and we can see how their performance in the previous matches has been much more consistent.
Barcelona shouldn't mess up with this opportunity, because it's their only chance to make a difference in the point gap for them to be in a better place of winning the league. Madrid is not going to give up on the title race until the end of the season which makes it dangerous for Barcelona to relent in any of their upcoming matches. Osasuna should be an obstacle to them.