RFEF president Luis Rubiales has the support of league chief Javier Tebas over the idea, which should protect players against fitness issues
The Spanish Football Federation (RFEF) has officially announced it will propose the possibility of allowing teams to make five substitutions per game if football returns in the country.
The measure, which had previously been suggested by FIFA, would be introduced in order to help teams better manage player fitness after a long period away from the game.
A statement from the RFEF said the changes could be made at three points in each match, in order to lessen the impact of a potential 10 substitutions would have on running down the clock.