You cant say Osasuna is not a strong opponent. I think they are not the favorite side but they are a good side in LaLiga. Last season, Real Madrid was only able to win them with a goal to nothing in the second leg. With the way, they have improved their squad, its going to be a fair battle for both clubs. And all I can say is let the better side real. Anyway my bet still goes to Real Madrid to win.
No opponent can be underestimated before the match starts, because sometimes even the most underrated opponents can beat even the strongest teams.
Although considering the quality of their players, Real Madrid is the favorite to win.
I'm confident Real Madrid will win, but Osasuna will put up their best fight, and we'll have to see how Xabi Alonso can significantly improve his team's performance in this match.
Will they up their game, or will they play as usual and not show the much stronger team in the title race?