The AFL will play extra time if next Saturday's grand final replay is drawn again.

The league has outlined the initial arrangements for the Collingwood-St Kilda rematch, following the first drawn grand final since 1977.

It will have the same start time of 2.30pm AEST.

"AFL chief executive officer Andrew Demetriou said that after discussions with the AFL chairman Mike Fitzpatrick and the AFL Executive it has been decided that in the event of a second drawn grand final, that extra time will be played," the league said in a statement.

"Five minutes extra time each end will be played."

Tickets will go on sale from 9am on Monday and there will be up to 16,000 more available to members of the two clubs.

The extra tickets were corporate allocations for the drawn game and these will be in addition to the 25,000 normally available to members of the two clubs.

AFL members can buy tickets from 9am on Tuesday and if there are any left over, these will go on sale to the public from 9am on Wednesday.

The league will announce other grand final week announcements on Monday.

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