Five potential first round draftees are among 25 players eligible to be listed by the northern academy clubs at this year's NAB AFL Draft.

Callum Mills (Sydney Swans) and Jacob Hooper (GWS) are expected to attract early bids from rival clubs under the new system.

Matthew Kennedy (GWS) and Brisbane pair Eric Hipwood and Ben Keays are other likely first-rounders.

This year's nomination process has changed to fall in line with the introduction of live bidding during this year's draft.

Last year the academy clubs had to nominate their eligible group of players and then confirm a second nomination closer to the bidding meeting on the opening morning of the trade period.

But this year the four clubs only have to name the players eligible for academy selection at this point of the process, with the next step coming on draft night.

If a rival bids for Mills, for instance, the Swans will then get the option to match the bid. The same applies for all of the 25 players if a bid comes for them during the draft.

The technology required for live bidding is being developed by the AFL and statistics partner Champion Data and is expected to be ready for draft night.

ACADEMY NOMINATIONS

Brisbane Lions: Mabior Chol (Brisbane Lions academy), Eric Hipwood (Aspley), Ben Keays (Redlands), Corey Wagner (Aspley), Nick Weller (University of Queensland), Reuben William (Wilston Grange)
Gold Coast: Didymus Blanket (Southport Sharks), Robert Blood (Southport Sharks), Dyson Budarick (Labrador), Jesse Joyce (Palm Beach), Max Spencer (Palm Beach), Connor West (Labrador)
GWS: Jock Cornell (Magoplah), Nick Coughlan (Albury Tigers), Matthew Flynn (Nerrandera), Harrison Himmelberg (Mangoplah), Jacob Hopper (North Ballarat Rebels), Jack Irvine (Temora), Matthew Kennedy (Collingullie), Lachlan Tiziani (Albury)
Sydney Swans: Darcy Baron-Hay (North Shore), Lachlan Behagg (Manly Giants), Ryan Hebron (North Shore), Callum Mills (Mosman Swans), Matthew Wilson (Maroubra)