Cavan manager Mickey Graham says the lack of clarity regarding the penalty/sin bin rule means it should be scrapped before the start of the All-Ireland football championship.

The Ulster champions begin their title defence against Tyrone on 10 July in a quarter-final date in Omagh, but Graham says confusion regarding the application of the rule means it should be put on hold until at least next year's league campaign.

Clare manager Colm Collins was highly critical of the rule in the aftermath of the Banner's Division 2 league semi-final defeat after Mayo’s Enda Hession, who had already been booked and a black card would have seen him dismissed for the remainder of the game, escaped further action after a foul on Gavin Cooney when a goal chance looked on.

"That has to be the most ridiculous rule that was ever introduced, not just in football but any sport," he said. "Every weekend you’ve got penalties and black cards for that exact thing and then the next game nothing happens."

Graham agreed with the sentiments of his Clare counterpart, while adding the rule heaped added pressure on match officials.

"There is no real clarity on it at the moment," he said. "I have seen a few of them during the league as well that were not awarded so there is a bit of misunderstanding of what it should mean.

"I think definitely for the championship it should be looked at and maybe look at it in the league again next year again."

I would be of the opinion to scrap it until they look at it again, maybe in the league

Is there an argument the rule should be removed for the championship?

"I definitely do because, as I said, it is very unclear as to what is a penalty or what is not a penalty. It is basically down to the referee’s discretion.

"I would be of the opinion to scrap it until they look at it again, maybe in the league."

Graham, who saw his side relegated to Division 4 during a disappointing league campaign, says the issue will be magnified when a team exits the championship on the back of a wrong call regarding the rule.

"Teams have put in a huge effort and maybe gets a penalty (against them) in the wrong or maybe gets a penalty… definitely I think it will be a big talking point in the championship without a doubt and it could be one that could swing a game either way."

Ahead of what promises to be another keenly contested Ulster championship, Graham concedes that the quality within the province may have slipped somewhat in light of Kerry's crushing defeat of Tyrone and Dublin's easing past Donegal in the recent Division One semi-finals.

The Cavan boss says the Ulster contingent have a bit of work to do to get back up to pace with the leading pack.

"If you are looking at the league and taking that as the form guide, you would probably say that. Dublin and Kerry seem to be pushing on again and Ulster football is that bit behind. You would hope that wasn't the case but on the evidence of what we have seen so far you would have to think that.

"Mayo have had a good campaign as well, they are one of the contenders for the All-Ireland, The teams in Ulster, are their best years behind them? Only time will tell."