Wednesday 30 August 2017 15:13, UK
Ryan Shotton has signed a three-year deal at Middlesbrough after leaving Birmingham for an undisclosed fee.
The 28-year-old completed a medical on Wednesday morning, despite the clubs agreeing a fee three weeks ago.
Asked why he chose to switch Championship clubs, Shotton said: "Getting back into the Premier League and establishing this club where it needs to be.
"The chance to be getting promotion with a club like Middlesbrough is a dream so I'm just here to help sustain that."
Blues manager Harry Redknapp would not let Shotton leave until he found a replacement.
Birmingham are set to announce the signing of Brentford defender Harlee Dean, paving the way for Shotton to travel to Teesside on Wednesday.
Birmingham have also had a bid in the region of £3.5m rejected for Bristol City centre-back Aden Flint, according to Sky sources.
Championship rivals Norwich City are also understood to interested in the highly-rated 28-year-old, but have not yet tabled a formal offer for the defender.
Flint, who has scored 29 goals in 200 appearances for City since arriving from Swindon in 2013, may be allowed to leave by head coach Lee Johnson, who signed Villa defender Nathan Baker earlier in the summer.