Rhys Williams could become the fourth A-League player to move to the K League this season, with reigning champions FC Seoul keen on the Perth Glory centre-back.
Williams has reportedly been on the verge of leaving Glory for over a month, with Perth rejecting interest from Sydney FC in favour of a potential transfer abroad, while the 28-year-old has also been linked clubs from South Korea, China and the Middle East.
The defender's agent Tony Rallis has told Goal that two K League clubs have approached him about signing Williams.
Goal understands Seoul are one of the clubs keen on the Socceroos defender.
If Williams was to move to South Korea's top tier, he would join compatriots Connor Chapman, Matt Jurman, Dimitri Petratos, Tomislav Mrcela and Aleksandar Jovanovic in the K League.
Chapman (Incheon United), Jurman (Suwon Bluewings) and Petratos (Ulsan) have all swapped the A-League for the K League over the past six weeks.
Rallis and Williams are now looking into the latter's options to identify how much competition he is likely to have in his preferred positions of central defence and defensive midfield.
The former Middlesbrough captain has expressed an interest in heading north, with a lack of game time under Kenny Lowe one of the reasons.
Williams has made just 10 A-League appearances for Glory, although he did play 90 minutes in Perth's 5-0 drubbing of Adelaide United last week.
With the K League transfer window open until March 30, Williams is in no rush to make a decision.
Seoul are set to begin their AFC Champions League campaign against Shanghai SIPG on Tuesday, which means they would be unable to register Williams for the continental competition if he were to join the K League champions.
With the K League operating the 3+1 foreign player quota, there are three other clubs with room to sign Williams at the time of writing - Daegu and Gwangju.