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.
Despite their first leg defeat I still don't see Osasuna as a obstacles for Barcelona. I saw some news earlier about Barcelona player I don't know whether it's true regarding Araujo and Raphinha will be absent against Osasuna game, this is an opportunity for Barcelona to get the three points easily but with this absent I hope it can affect them because I see those two needed badly in this match but I trust Hansi Flick on this, he knows what his doing. This is an important match because having equal points displayed on the table all the time with Real Madrid isn't proper at least let the differences be clear between the two. Barcelona is still the favourite to win the league due to their current chances which I have no doubt on their victory against Osasuna since they are hosting.