Matthew Pavlich, Luke McPharlin, David Mundy and Nat Fyfe are all out of contract at the end of the season.
Midfield duo Mundy and Fyfe are expected to attract significant attention from clubs in the East, but Lyon told 6PR’s Sports Today he wasn’t worried.
"It doesn't concern me whatsoever," the Freo senior coach said.
"We respect everyone's right to pursue their commercial value.
"From here to the end of the year anything can happen with form and fitness and all those things. It's not a worry for me. It's just topical."
Pavlich appears increasingly likely to play on next year, while 32-year-old McPharlin is yet to make a call on his future.
The All Australian defender (quad) is a chance to return for Sunday's clash with the Western Bulldogs at Etihad Stadium, while former Demon Colin Sylvia could come into calculations for a Freo debut in the coming weeks if injuries or poor form strikes.
