Managers in the FA Cup could be able to make 10 substitutes in a game, under very extreme circumstances, under a couple of new rules.
Jurgen Klopp, amongst other managers, has complained at the Premier League's decision not to keep five subs for this season, as they had at the end of last season, on several occasions.
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Whilst the Liverpool boss didn't make a single substitution on Wednesday night, as his side beat Spurs 2-1 to go top of the table, the German could soon make 10 changes during a game.
Unlike the Premier League, the FA have decided that they will allow five substitutions during a game and with an added sub in extra time that means teams can make six, and, with no replays, extra time is more likely this season.
On Thursday the International Football Association Board (IFAB), who decide the laws of the game, gave the go ahead for trials into concussion substitutions, after recent controversy over the subject and the shock that David Luiz was allowed to continue playing against Wolves.
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The FA confirmed they would allow the trials to take place in the Emirates FA Cup, Vitality Women's FA Cup, Barclays FA Women's Super League and FA Women's Championship, 'at the earliest practical opportunity.'
According to the Daily Mail there could be four more subs used in a game due to the IFAB trial.
The new laws will allow for two extra concussion substitutes for head injuries but, in order to stop teams from exploiting the law, the opposition will also be able to make a substitution at the same time.
That means if both sides had two concussions in the game then it would be an extra four changes each, meaning potentially 10 changes for each side in 120 minutes of football.
Speaking to the Telegraph about the decision to go with five subs, and his surprise that the league haven't, FA chief executive Mark Bullingham said, "The reason we want [five subs] in the [FA Cup] is the reason most other leagues around the world have applied it. That is, for player welfare.
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"Yes I am surprised that the Premier League hasn't brought it in, I think when we started off at an IFAB level we fully expected all of the leading leagues to sign it off for the reason of a very congested season with a lack of pre-season. Whether that decision changes or not, that's obviously up to the clubs."
Sport in England has been rocked by the issues around concussion in recent weeks with a number of high profile dementia cases linked to the issue.
Sir Bobby Charlton was recently diagnosed with the syndrome and World Cup winning teammate passed away last month after battling with it.
Rugby has also been affected with several players part of a class-action lawsuit against the sport.
Featured Image Credit: PATopics: Concussion in sport, Football News, Pep Guardiola, English Football, Premier League, FA Cup, Jurgen Klopp