A new 42-club body, which includes top-flight play-offs, has been agreed by Scottish Premier League teams and could be introduced in time for next season.
The proposals are yet to be put to the Scottish Football League but would involve a 12-10-10-10 league system. The 11th placed team in the top-flight would compete in a four team play-off at the end of the season.
Ross County and St Mirren rejected a similar plan in April on the basis that they were unconvinced by the idea of splitting the top two divisions into three after 22 games. This part of the plan has now been dropped.
A statement released jointly by the Premier League clubs says: "The SPL looks forward to working with the Scottish FA and Scottish Football League [SFL] to deliver vibrant change for the game as a whole."
Meanwhile, SPL chairman Ralph Topping added: "I am pleased that SPL clubs have today agreed on a way forward for the game in this country. We have tremendous sympathy with the SFL1 clubs and their plight and with their shared ambition for a 42-club solution.
"Much work needs to be done in a short space of time to achieve our objective of a single merged league this summer. But, where there is a will, there is a way. The time for action is now."
Information from the Press Association was used in this report.