Barcelona boss Ronald Koeman said his side's second-half capitulation at Levante was difficult to understand.
Barcelona's hopes of winning the LaLiga title suffered a major setback as they were held by battling Levante.
Ferland Mendy, who has missed Real Madrid's past five LaLiga matches, has sustained another injury.
Real Madrid were on the wrong end of a big penalty call on Sunday, but Barcelona boss Ronald Koeman did not wish to discuss the incident.
Real Madrid missed the opportunity to go top of LaLiga, but Zinedine Zidane feels that is because of the officiating against Sevilla.
Luka Modric reflected on Sunday's 2-2 draw at home to Sevilla, which left Real Madrid two points off the pace with three games to play.
Toni Kroos' shot deflected in off team-mate Eden Hazard in added time to salvage a point for Real Madrid on Sunday.
Barcelona missed the chance to take control of the title race as they were held to a 0-0 draw by Atletico Madrid at Camp Nou.
Real Madrid could move above Atletico Madrid at the LaLiga summit with victory over Sevilla, but Diego Simeone has no plans to watch it.
Atletico Madrid missed the opportunity to strengthen their position in LaLiga as they were held to a goalless draw by Barcelona.