Union Berlin have signed midfielder Wooyeong Jeong on loan from VfB Stuttgart, the Bundesliga club said on Tuesday. “His versatility and quality as a player were decisive factors in his signing. He not only brings technical ability, but also the right attitude and a great willingness to fit into any system,” Union head of football Horst Heldt said. Jeong moved from Freiburg to Stuttgart last year and scored five goals in 29 games.