FREE agency rules are set to undergo a minor change, with 'lifetime free agency' for players who have served eight years at one club the most likely tweak, according to AFL CEO Gillon McLachlan.

McLachlan confirmed on Friday that the League had considered a number of changes to player movement rules following a strong push from the AFL Players Association.

It was reported by Fairfax Media this week that the AFL was also considering free agency for players who have served a total of eight years with multiple clubs, and four-year free agency for players earning on or under the median AFL wage.

McLachlan said the most likely change was the "sensible option" of making players free agents for the rest of their careers after they move clubs under the system.

"Those options were considered. We haven't finalised the deal, but the clubs have been briefed. If there are concessions they will be minor ones," McLachlan said on 3AW.

"Broadly free agency will stay the same, but there may be one change. The most likely is lifetime free agency.

"Right now, if a 28-year-old player moves under free agency, he theoretically has to be there (at his new club) another six years to become eligible for free agency again.

"Once someone has moved under free agency I think it becomes logical that they become a free agent … it's a logical change. I think it's just a sensible change."

Any changes to the free agency system appear unlikely to be implemented in 2017, with the AFL and AFLPA previously indicating that clubs would need a transition period of at least one year.

McLachlan said he did not believe the constant speculation on free agents had become a negative aspect of the AFL, with Richmond star Dustin Martin being linked to Essendon and North Melbourne.

"I don't think it is, I think it's part of football," the CEO said.  

"The line is to say there's no loyalty anymore, (but) the vast majority of players have already re-signed.

"You look at the Giants, they've got stars like Dylan Shiel, Rory Lobb, all these players have re-signed.

"Dustin just happens to be working through it. Richmond are a very good club, they're very well run, and I don't read a lot into the fact he's taking his time with this."