PORT Adelaide onballer Shaun Burgoyne will join Hawthorn next season as part of a four-club trade.

The deal also sees Hawk forward Mark Williams sign a three-year deal with Essendon, and Bomber Jay Nash move to Port Adelaide.

The Power also receive two first-round draft picks: No.9 (from Hawthorn) and 16 (from Essendon, on-traded by Hawthorn).

Geelong, the fourth club involved in the trade, has parted with pick 33 in exchange for three third-round picks. The Cats took draft selections 40 and 56 from Port Adelaide, and 42 from Essendon.

In a further exchange of picks, Essendon receives No.24 (from Port Adelaide), and Geelong's 33.

Relations between the Power and Hawthorn appeared strained on Wednesday after Hawks president Jeff Kennett stymied a potential deal involving defender Campbell Brown.

But on Thursday night, Power football operations manager Peter Rohde confirmed an agreement had been reached.

The complicated arrangement leaves Port Adelaide with three picks in the first round of November’s NAB AFL Draft - No.8, 9 and 16 - which Rohde said was a "terrific position".

"We wish Shaun all the best at Hawthorn," he added.

"We are also delighted to have secured Jay Nash from Essendon.

"We have had our eye on Jay since he was drafted and really rate him as a half-back or onballer."

Hawthorn player and personnel manager Chris Pelchen said the Hawks were delighted to have wrapped up the Williams deal as part of the Burgoyne trade.

"Williams had a contract with Hawthorn for the 2010 season but received an offer for three years from Essendon and requested to be traded," Pelchen said in a statement.

He said Burgoyne was a quality player of outstanding character.

"He offers us another highly talented option in our midfield and we look forward to seeing him in the brown and gold next year."