Negotiations between Mexican Football Federation and CONMEBOL , who host the Libertadores , had broken down after disagreements over what types of players the Liga MX entrants could bring in .
Liga MX sides have played in the Copa Libertadores since 1998 .
Negotiations between Mexican Football Federation and CONMEBOL , who host the Copa Libertadores , had broken down after disagreements over what types of players the Liga MX entrants could bring in .
Liga MX sides have played in the Copa Libertadores since 1998 .