By Adam Shergold for MailOnline
Published: 07:27 GMT, 4 March 2020 | Updated: 07:27 GMT, 4 March 2020
The 16-year-old has been in high demand from some of Europe's leading clubs after a superb breakthrough season in the Championship.
But, according to German outlet Sport Bild, Dortmund have won the race for his signature and are prepared to break their own club record transfer fee to get him.
Birmingham City wonderkid