Whatever the result later Barcelona will still lead the top of the standings because the difference with Real Madrid is 4 points, even though Barcelona lost and Real Madrid win tomorrow it does not change the standings,
That good, but we won't really know what kind of player rotation Flick will do and maybe everything can be answered when the match starts later and we can see the line-up of the two team, Rapinhan has always given surprises in the last few match.
But one important note here is that Real Madrid still has 1 match left against Villareal which has been postponed. If Barcelona loses and Real Madrid wins against Girona then it will not shift Barcelona's position for now. But Madrid has the advantage with the remaining match. So this is a match that Barcelona must win.
but yes we all know Barcelona is the favorite even though they play away and by only playing against Real Betis it is still very possible for Barcelona to win.
Honestly I still doubt whether Barcelona can win this match or not. Based on individual and team quality of course Barcelona is better than Real Betis and the odds also favor Barcelona to win the match. But we see Barcelona has suffered 3 defeats and that was from unpredictable teams like La Palmas, Sociedad and Osasuna. On the other hand Real Madrid only suffered 1 defeat and that was against Barcelona. So I think Barcelona is still inconsistent with their performance this season.