Tottenham and Manchester United have urged the Premier League to allow teams to have more substitutes on the bench.
Ramos and Ferguson want substitute change
United boss Sir Alex Ferguson and Spurs coach Juande Ramos say there should be seven substitutes to choose from rather than present limit of five.
"Every club has players of squads of more than 16 players," said Ferguson.
"I didn't choose Darren Fletcher for the Arsenal game and that was a kick in a teeth for him and it didn't sit easy with me," added Ferguson.
Manchester City boss Sven-Goran Eriksson also favours a change in the Premier League's rules on substitutes, with managers allowed to bring on three players from a choice of five.
The Premier League said it was willing to look at the issue, but any change was unlikely to come into effect before the start of next season.
"If member clubs want to raise it then we'll look and discuss it as a league," a Premier League spokesman told BBC Sport.
"We've resisted the idea before because we feel it favours the bigger clubs who have bigger squads.
"If it was raised it would go to (our) summer conference, and if the clubs agreed it could be in place for the start of the 2008/2009 season."
Premier League voting rules require 14 out of the 20 clubs to back rule changes.
In Champions League matches as well as international fixtures coaches and managers are allowed to name seven subs and bring on three of them.