Kai Wagner spent only six months with Birmingham City before returning to the Philadelphia Union in Major League Soccer, where the left-back chose to return for family and personal reasons.

Kai Wagner, who played in Germany till 2019, spent seven years with Philadelphia Union before joining St. Andrew’s in January. He joined the MLS team from FC Wurzburger Kickers.

In January, he signed a two-and-a-half-year contract with Birmingham City, during which time the 29-year-old made 18 appearances. He scored once and assisted three times, and many fans embraced the attacking full-back instantly.

Wagner has detailed why he made the difficult decision to leave Birmingham in a £3.8 million return to Philadelphia in a heartfelt message on X (formerly Twitter), with the full-back returning to a club where he has made 253 appearances and scored 10 goals and assisted 54 times – primarily for personal reasons involving his family.

Kai Wagner makes Birmingham City claim after joining the Philadelphia Union.

Wagner’s experience in the second city appears to have had a lasting impact, despite the fact that he only played under Chris Davies at Birmingham for six months.

Wagner reflected on his time with the Blues on the Philadelphia Union’s official YouTube page, making a revelation that may surprise some following his stunning exit.

“Yeah, the experience was incredible, to be honest. The club is comparable to one of England’s largest clubs.”Seeing the fanbase and experiencing a different lifestyle was truly unique.””I’m grateful for the opportunity to play in this league and experience different styles of play.”I met some wonderful people and made many new friends, but that chapter has come to an end.”

Birmingham City’s summer transfer window has not been especially intriguing.

Birmingham have had a steady rather than spectacular start to the summer transfer market. Jhon Solis’ loan move has been converted into a permanent contract, James Beadle has returned for a second loan stay, and Dael Fry has joined on a free transfer to strengthen the defence.

All three appear to be sensible additions, but with promotion to the Premier League as the goal, there is still a lot of work to be done, while other Championship rivals have already made a flurry of signings. Wagner’s exit has only increased the urgency.

Last season, the German demonstrated his ability at left-back, providing real skill in possession and a regular attacking threat from wide positions. This summer, Davies and his team will face challenges in replacing that profile. Birmingham presently appear to be particularly short in full-backs, which they must rectify before the season begins.

Davies will ideally want another left-back who can strike a mix between solidity and attacking ambition, as well as potentially offer more dynamism in the final third. It is undoubtedly going to be one of the club’s main priorities in the coming weeks, but they still need a lot more this summer.