New Football League rules limiting teams to just five substitutes have been slammed by Oxford United manager Chris Wilder.
The new rule means that Wilder and his fellow Football League managers will only be allowed to select five substitutes instead of last season's seven.
Wilder told BBC Radio Oxford: "I think it's a ridiculous decision, I don't get it. The proposal was done without managers being told or asked."
Oxford lost their opening league game at Rotherham at the weekend and Wilder says he fears the new rule will stifle the chances of younger players.
"All players want to be involved and have an opportunity to get on to the pitch," he added.
"It's good for the younger players to get match time on the pitch as well. I just don't get it, it's a non-football decision."
A spokesman for the Football League revealed the decision was made in light of the financial difficulties clubs are currently facing.
Teams in the Football League are still permitted to name seven substitutes in the League Cup and the FA Cup, but only five in the Johnstone's Paint Trophy.