The desire to win the Super Cup title will happen if they are able to convince us to beat Osasuna. They are confident of winning the match against Osasuna and Barcelona will enter the final round which their rivals, Real Madrid, have been waiting for.
Xavi's desire will be difficult against Real Madrid even though I am more interested in Barcelona and have the hope that the final round of the Super Cup will bring together two big teams.

Barcelona's performance has been uncertain so far and I agree because that is the reality. If Barcelona plays in the final, the uncertainty of Barcelona's performance could change even more because Barcelona has a mentality when playing in the final and that is also what Real Madrid has.
It wouldn't be interesting if Barcelona lost and Osasuna advanced to the final round.