Celtic target Cho Gue-sung's agent has revealed the Glasgow giants have been the "most active" in trying to secure his player's signature.
Ange Postecoglou is looking to strengthen his striking options ahead of the expected departure of Greek striker Giorgos Giakoumakis. The 28-year-old is wanted by J League side Urawa Red Diamonds, however they have failed to offer the fee wanted by the Parkhead club. Celtic are also said to be keen on Kwon Hyeok-kyu and Oh Hyeon-gyu to replace Giakoumakis - with latter wanting to head to Scotland.
According to Gue-sung's representative, Celtic have made a number of approaches for the South Korean striker with a video call taking place between the east end club and Jeonbuk Hyundai Motors. The league champions are not the only team in for the World Cup star with Bundesliga side Mainz and MLS outfit Minnesota United also interested in securing his services.
Gue-sung agent told Daum: "The teams that sent meaningful offers were Celtic, Minnesota, and Mainz. Celtic was contacted through a collaborating agent and worked for a long time. Our international staff continued to communicate with the club officials and the president.
"Celtic's first proposal was not at a level that Jeonbuk was satisfied with, but they even sent a letter saying that if Jeonbuk sent a player, Jeonbuk would meet all the conditions they wanted. So, I sent my intention to include the sell-on clause. This part was not included in the official letter.
"If Jeonbuk said they would send a player, they decided to send a letter containing this information again. Celtic was the most active. The director even wanted a video call. Our staff translated and even talked directly to the players."
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