AN AFL investigation centering on Kurt Tippett dominated another slow day of trading on Wednesday, but there is still a chance the 25-year-old Crow will join the Sydney Swans by Friday's 2pm deadline.

AFL.com.au believes the Crows will not be stopped from trading Tippett while an AFL investigation continues into details surrounding his last contract with Adelaide.

A deal to trade Tippett to the Swans was close to completion last Friday but stalled at the last moment.

Adelaide says it will cop any penalty handed out by the AFL for the secret deal which could derail Tippett's bid to join Swans.

The deal was hidden from the AFL for three years until last Friday and Adelaide chairman Rob Chapman said the Crows board confessed to the League "because it was the right thing to do".

"There was no alternative here," Chapman told Adelaide radio station 5AA.

Chapman did not explain why Adelaide kept the deal a secret for three years but did say: "We will take whatever comes out of it."

The views in this story are those of the author and not necessarily those of the clubs or the AFL