Kai Wagner is returning to the Philadelphia Union! The 29-year-old German left-back is returning to the Union on a DP deal for a transfer fee of under $4m, per tom_bogert. Wagner joined Championship side Birmingham City after the 2025 MLS season for about half of the <$4m fee they paid to bring him back. He had 3 assists in 16 appearances (all starts) for Birmingham last season. #philadephia #philly #philadelphiaunion