If Real Madrid wins, the points will be reduced and their chances of winning the Laliga title will increase because they will generate more confidence in the match and the way they just pick form they can do well to close more gap because every team has a high tendency to drop points.
They have two games. In the league and Copa del rey in the second round semi-finals. Barcelona feel lucky that they can focus on domestic competitions. Meanwhile, Real Still continue to fight in the UCL against Liverpool tomorrow.
That means there is always a chance of Real Madrid winning, but realistically two games against Barcelona will be played at the Camp Nou. That will make Real Madrid difficult because it is at home to Barcelona. I have a little doubt Real can win, but they may at least a draw is a good result.
Even though there is still a chance to win the League but I think Ancellotti will focus his team more on the champions league at this time because compared to the league it looks like the champions league is more realistic for them to get, even though they only have 9 points difference from Barcelona but to catch up with barcelona will be very difficult for madrid, barcelona main focus right now is the league trophy and copa del rey after they got knocked out of the european league and I think Xavi will continue to optimize his core squad even against weak teams, i'm pretty sure that for the league cup this season it will belong to barcelona because all along their season in the league is quite impressive compared to madrid.