David Moyes admits that he does not always tell his players that they will be substituted beforehand, but he claims that he was always going to use all five subs against Kidderminster at the weekend.
Trailing 1-0 at half-time to the non-league side, Moyes hauled Alex Kral and Issa Diop off, bringing Craig Dawson and Declan Rice, who went on to score the late equaliser. 
Later on, he also took off Ben Johnson and Mark Noble, replacing them with Aaron Cresswell and Tomas Soucek, and brought on Pablo Fornals for Nikola Vlasic with 13 minutes remaining.
He admits that players usually get to know how managers work, so no prior warning of a sub is necessary.
He told reporters: “Sometimes but they get to know how managers work and the manager’s feelings. If you’re someone relatively new you might not know but they will know my thoughts and their own thoughts about how they felt about it.
But let’s be fair we could have taken a few players off at the time, not just those two (Alex Kral and Issa Diop) so they should not feel any worse than any of the others. That was the choice we made at the time, we felt it would give us the best chance to get back in the game.
“I told the players before we played I would be using the five subs in the game against Kidderminster, I told them that we would do that pretty early as well so they were all aware of that and it was always going to happen.”
The FA Cup does utilise the rule of five substitutions, whereas the Premier League only allows three, and Moyes believes the league should change their rule.
He added: “When I was first asked I did not think we should change from three but as it goes on I realised that player welfare with the games coming up I do think that five is better so I did change tack halfway through last season where I said I thought we should go to five but I don’t know if we can change during the season, I am not sure about that but going forward I think it might be the way forward.
“It is partly to do with the amount of games in the schedule which has made it really difficult. It is going to get worse with all the teams having to play Tuesday, Thursday, Saturday soon trying to fit in games.”