KUALA LUMPUR (AFP) - Japan have offered their South Korean coach Park Joo-Bong an extension of his contract to stay on until the London 2012 Olympics, he said on Saturday. Park, one of the games greatest doubles players in the 1980s, has taken Japanese badminton to new heights and the Japan Badminton Association appealed to him not to leave when his current deal expires in March next year, he said. I have not decided on that (request) yet, said Park, the most successful player in world championships history with five titles two in the mens doubles and three in the mixed doubles. Park, in Kuala Lumpur this week with the Japanese Thomas and Uber Cup teams, has been instrumental in Japans rise in the badminton world. His side reached their first Thomas Cup semi-finals before bowing out to 13-time champions Indonesia 3-1 with a fighting display. I may stay on or may not, Park said. My present contract will only end in March next year. I am happy coaching the Japanese teams and have no grouses, said Park, who won the mens doubles gold with Kim Moon-Soo in the 1992 Barcelona Olympics. We have made inroads in badminton but we are still lacking behind the top four badminton countries in the world China, Indonesia, Malaysia and Denmark. However, we are slowly catching up on them, Park said.