Kai Brünker

Early and personal life Brünker is from Villingen-Schwenningen; in August 2018 he stated that a number of people from his village had bought Bradford City shirts and were watching matches online. During the 2020 coronavirus outbreak in Germany he returned to stay in Villingen after the football season had been ended early.

Career Brünker spent his early career in Germany with FC Kappel, SV Zimmern, FC 08 Villingen and SC Freiburg II.

He turned professional with English club Bradford City in January 2018, signing an 18-month contract. He was signed by the club as support for Charlie Wyke. He made his debut for the club on 27 January 2018, appearing as a substitute in a 4–0 league defeat at home to AFC Wimbledon. He made his first start the next day, on 13 April 2018, in a 0–0 league draw at home to Shrewsbury Town. Ahead of the 2018–19 season he stated he was looking forward to breaking back into the first team following an ankle injury at the end of the previous season and the appointment of Michael Collins as the new manager.

He scored his first goal for Bradford City in a 4–1 home defeat in the EFL Trophy on 9 October 2018. He described it as a "special moment".

He left the club in January 2019, to return to Germany, signing for SG Sonnenhof Großaspach on a contract until June 2020. After leaving Bradford City he was described by the local newspaper as "a bit of a cult hero at City, but sadly it was for all the wrong reasons". At the end of the 2019–20 season, following Sonnenhof Großaspach's relegation, he signed for 1. FC Magdeburg on a two-year contract.

In June 2023, he joined 1. FC Saarbrücken. On 12 March 2024, he scored the winning goal for the latter in the stoppage time of a 2–1 victory over Borussia Mönchengladbach in the DFB-Pokal quarter-finals.

Career statistics