THE PROSPECT of Lance Franklin playing for the Sydney Swans in 2014 has already had a dramatic effect on betting markets for next premiership.

Within minutes of the tweet from Greater Western Sydney that it had withdrawn its offer to Franklin because of their belief that he would sign with the Swans, TAB Sportsbet bumped the Swans up to $6 in premiership betting, equal second favourite with Fremantle.

The Swans had opened up at the start of this week on the third line of betting, at $7.50.

Hawthorn is the early favourite for next year's premiership, at $4.50.

The Giants, at $501, remain the rank outsiders and now that Franklin is unlikely to join them, will remain so for the foreseeable future.