Gianni Infantino, the FIFA president, has called for talks with the clubs but understands the need for sanctions.
Luis Suárez is Atletico Madrid's top scorer with 19 goals this season, and Marcos Llorente has also been in spectacular form with 12 goals.
Both sides are separated by just two points – and with just four games to go, Saturday’s match could be decisive.
Barcelona host Atletico Madrid in a potential title showdown at the Camp Nou on Saturday.
Karim Benzema has scored 71 goals in the UEFA Champions League sitting on level with Raúl González's tally.
Barcelona beat Valencia 3-2 at Mestalla on Sunday courtesy of a goals fro Lionel Messi and Antoine Griezmann.
Granada beat Barcelona 2-1 at the Camp Nou on Thursday courtesy of two second half goals from Darwin Machis and Jorge Molina.
During his time at Real Madrid, Ronaldo came up with the noble gesture to help his teammate find his goal-scoring touch
Barcelona beat Getafe 5-2 at Camp Nou on Thursday to put the pressure on league leaders Atletico Madrid.
Lionel Messi is keeping everyone Guessing on his future plan even after the Copa del Rey title triumph on Saturday.