Sources: Heavyweights Mark Hunt, Justin Willis to meet in Australia

Another heavyweight fight is headed to Adelaide, Australia.

The UFC has booked Mark Hunt vs. Justin Willis for the Dec. 2 event, multiple sources told ESPN.

The fight represents a bit of a changing of the guard at heavyweight. It would mark the final one on Hunt's contract and the first of a new four-fight deal that Willis recently signed.

The 44-year-old Hunt (13-13-1, 1 NC) lost via submission to Aleksei Oleynik earlier this month, while the 31-year-old Willis (7-1) is coming off a unanimous decision over Chase Sherman in April. The win marked Willis' seventh in a row.

Considering Hunt's public criticism of the UFC over the past two years -- as well as his pending lawsuit against the promotion, UFC president Dana White and Brock Lesnar, stemming from Lesnar's failed drug test after UFC 200 -- it is very likely this fight will mark the end of Hunt's UFC run, though Hunt does plan on continuing his career regardless of the outcome, sources said.

The event is scheduled to be headlined by heavyweights Junior dos Santos and Tai Tuivasa.