Perhaps Ancelotti will give some players a rest, but I don’t think that Real will play today mainly with players from the bench, because the El Classico for La Liga is also a very important event that Ancelotti cannot neglect. In addition, if you give this game to Barcelona, they will be 5 points closer to Real, which is not critical, but why allow this if you can beat Barcelona today and get closer to the championship.
Because this is an El Classico match, there is no reason not to field the main squad. Ancelotti realizes that the match is not an ordinary match and will continue to involve their respective statuses. Likewise, Barcelona has no other targets in European competition, so this is the only match they have to maximize. Plus, if Barcelona is able to get 3 points then they are very open to continuing to chase Real Madrid. There is nothing impossible as long as they have matches remaining, Barcelona is definitely waiting for Madrid to slip up and lose one match and today is the opportunity. With 7 matches remaining, many unexpected situations can still occur, Madrid cannot feel comfortable at the top of the standings just because they are leading on points.
El Clasico is always an important match for both teams because it has been a prestigious match for both teams for a long time, but currently both teams are in different conditions, Barcelona is in a downturn after being eliminated from the UCL and this is inversely proportional to Real Madrid which makes them now is in high self-confidence.
This is an important match so there is no reason for both teams not to field their main squad, both teams are aiming for victory with different motivations.