Hyun-seok Hong is being considered as a potential option for Union SG. Currently playing for FSV Mainz, he is contracted with the club until mid-2028 and has a market value of 3.5 million euros. While multiple Belgian clubs have shown interest in him, the specific teams have not been confirmed. Hong's time at Mainz has been less than impressive, as he only accumulated 519 minutes in 23 matches last season, resulting in no goals and just one assist. This contrasts with his more successful tenure at AA Gent, where he scored 18 goals and provided 20 assists in 104 matches. Despite his existing contract, Mainz is reportedly open to allowing him to leave, as his performance has not justified the 4 million euros they invested in him in 2024. Hong remains a notable figure in Belgium, making a return to the JPL a plausible scenario.