Why Celtic were allowed six subs against St Mirren as concussion confusion made clear

Confusion reigned briefly as Celtic made six subs against St Mirren, despite none of their players having to leave the field due to concussion.

James Forrest's introduction made it six changes for Brendan Rodgers' side as they cruised to a 3-0 victory over St Mirren so as not to give Rangers any further encouragement in the title race. Goalscorers Reo Hatate and Kyogo Furuhashi both made way in a raft of subs for the champions with just over 20 to go, with Adam Idah notching after coming off the bench again following his goal at ibrox last weekend.

But heads were being scratched when Forrest came on for Nicolas Kuhn shortly after. The sixth sub was discussed on Sportsound, with former ref Bobby Madden explaining in the studio that teams MUST inform the referee, fourth official and opposition if they make a change due to a player suffering a potential concussion. If that doesn't happen, then it becomes an issue.

However, Ryan Strain's first half head knock WAS a concussion sub. And that means both sides are entitled to an additional change over the course of the 90 minutes.

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