Defender Timo Baumgartl has extended his loan stay at Union Berlin by a year as he continues his recovery from testicular cancer, the Bundesliga club said Tuesday. “Timo has shown in his first season how important he is for our defence,” Oliver Ruhnert, Union’s head of professional football, told the club website. “Therefore, the extension of the loan makes sense for us from a footballing point of view alone. “In addition, we want to support Timo as best we can on his way and are confident that he will make a full recovery.” PSV Eindhoven’s Baumgartl, 26, had played an important role in helpin…