I don't see Real Madrid as the certain favourite for now either. Apart from that it is still too early to make this kind of predictions. I mean we don't know how strong Real Madrid are going to play this time and whether Barcelona will keep up the good work also. It is seen that Barcelona have improved themselves very much of course. Except these teams I don't expect Atletico Madrid or another different team to become the champions. I just don't feel like it will happen. We would see a race between Barcelona and Real Madrid.
If we compare it with rival teams, madrid is indeed a little passive in the transfer market but I think the depth of their current squad is quite good and stable so madrid should also be reckoned as a candidate for the La Liga title next season, for next season I think the title competition will be again happened between Barcelona and Madrid which indeed both teams look quite strong, especially Barcelona which is now starting to improve its squad by bringing in several new players at this time.
Last season there was no competitive rivalry because the team under Real Madrid last season was not strong enough and it is proven, Barcelona, who started in the middle of the table but could end the season in second place. Next season, of course, the competition in the title race will be very tight for both, although Real Madrid is still in the old composition but Real Madrid really can't be underestimated at all. In contrast to Barcelona who have many new faces in their main squad, we will see if this Barcelona purchase really works or not, but I am very sure Barcelona will succeed next season in La Liga.