The prospect of five substitutes being allowed in Premier League matches is likely to move closer on Thursday.
It is due to be one of the significant topics for discussion at the shareholder meeting of all 20 clubs.
It is thought a formal vote on the matter is unlikely but in debating the topic the clubs are signalling it is something they are willing to consider.
Five substitutes were introduced across the game in May 2020 after the shutdown caused by the coronavirus pandemic.
However, controversially, the Premier League became the only major competition to ditch the rule for the compressed 2020-21 season because some objected that it gave the clubs with bigger squads an unfair advantage.