Is Neymar coming back? - A Big Question

FC Barcelona pursue their domestic demands with the chase for Champions League success? Can Zinedine Zidane plot Real Madrid's path out of the doldrums? And will either of them sign Neymar Dos Santos who is currently playing in PSG?

The new La Liga season is facing a lot of questions of the leading contenders after a summer of heavy spending - not just Real and Barca, but Atletico Madrid and Sevilla too.

It is a testing start for champions Barcelona, who recently lost against Athletic Bilbao.

To preview the season, BBC Sport tackles four key La Liga questions.