Mexico coach Javier Aguirre is holding the pre-World Cup camp at the Mexican Football Federation's High-Performance Centre in Mexico City
The Mexican Football Federation has told domestic players from Liga MX they will be dropped from the country's World Cup squad if they fail to report for a training camp and stay with their clubs instead.
The camp, starting Wednesday, 6 May, is taking place outside Fifa's designated international window and clashes with Liga MX play-offs in the top flight of Mexican football and Concacaf Champions Cup matches.
A deadline of 8pm local time (03:00 BST on Thursday, 7 May) has been given.
Last week, the federation (FMF) announced the 20 Liga MX players selected by coach Javier Aguirre to take part in the camp in Mexico City, with 12 players guaranteed a spot in the World Cup squad.
