Berlin - 1. FC Union Berlin midfielder Benjamin Köhler has been diagnosed with Hodgkin's lymphoma of the stomach, the club have confirmed.

The 34-year-old, who on Thursday signed a one-year contract extension at the capital outfit, has already started treatment.

'I'm going to fight it'

"It's a massive blow for my family and I," Köhler said. "First I've got to process it, but then I'm going to fight it with everything I've got. We'll be seeing each other again for sure."