In the normal laws of the game Blood, Bin Replacement is not counted as a substitution. I believe the same applies to the Blue Carded player.
If Rolling substitution is allowed.
A maximum of 12 substitutions (Changes) per team per match shall be allowed using 12 substitution cards.
Changes under this Law shall include blood replacements and injuries; indeed any time one player replaces another player from the same team other than front-row replacements required after a yellow card.
Therefore if a blood replacement happens and the player returns it will be counted as two.
Does a Blue card player count as replaced when rolling is allowed?
What is the position when rolling subs are allowed for sevens?
If Rolling substitution is allowed.
A maximum of 12 substitutions (Changes) per team per match shall be allowed using 12 substitution cards.
Changes under this Law shall include blood replacements and injuries; indeed any time one player replaces another player from the same team other than front-row replacements required after a yellow card.
Therefore if a blood replacement happens and the player returns it will be counted as two.
Does a Blue card player count as replaced when rolling is allowed?
What is the position when rolling subs are allowed for sevens?