Dutch footballer Jean-Paul Boëtius has said he has been diagnosed with cancer again and will have to undergo chemotherapy. “Despite overcoming cancer once, it has spread to my retroperitoneal lymph nodes. This means I will undergo chemotherapy, followed by rehabilitation,” Boëtius said late Friday on Instagram. “I eagerly look forward to the day I can play again in a full stadium. See you there!” Boëtius, 29, was diagnosed with testicular cancer in September 2022 while at German club Hertha Berlin but returned only four weeks later. He is without a club since summer, and before his one year at…