It's official: Kai Wagner has signed for Birmingham from Philadelphia. The defender's move has been confirmed by both clubs, with personal terms and registration finalised. He will now link up with his new teammates ahead of the upcoming fixtures, having completed a medical and agreed on contract terms. Birmingham have won the race for Kai Wagner, who had been tracked by Inter Miami CF earlier this month. Now that every aspect of the deal has been confirmed, the focus turns to preparing him for debut. The move is a clear signal of the club's ambition this season. Across the season 25/26, Birmingham have let in 34 goals in 25 (1.36 per game), roughly in line with the Championship average. Kai Wagner would be expected to give them some extra stability and depth for the tougher stretches of the season. No fresh speculation surrounds Philadelphia or Birmingham regarding other transfer targets. Stay tuned for more details as the story develops. Need more Birmingham transfer rumours? Follow @PlayerSwitchCom on Twitter for news and updates as they happen.