The club bought the 48-acre former Birmingham Wheels motorsport site in Bordesley in 2024 and said its plans would include housing and hotels, recreational facilities and green space.
Twelve chimneys will surround the new stadium, which will also host different sporting and entertainment events and have a retractable roof and moveable pitch.
Populous, which has its UK headquarters in London, has previously worked on projects at Tottenham Hotspur and Wembley stadiums.
Declan Sharkey, the firm’s senior principal and global director, added it was proud to be involved.
“Our aim is to combine our global expertise in elite training facility design with a bespoke approach, providing the club with an innovative, sustainable performance training environment and holistic environment for all of its teams and the staff who will use it,” he said.