Thierry Rohart-Brown, 16, has officially joined Southampton for an undisclosed fee from Reading.
The eighteen-year-old Dominic Ballard, who was loaned to Reading, was exchanged for the teen.
This season, Ballard has already netted three goals for the Royals, including a brace against Exeter City in a 9-0 victory.
After a thorough process, Rohart-Brown has been officially unveiled and will link up with the Saints Under-18s while contiuing his education.
Southampton Academy Director Andy Goldie said: “We are excited to welcome Thierry and his family to the Academy. After an extensive process by Jack Chapman, Simon Jones and our scouting team, Thierry was our top target given his versatility across our midfield profiles and potential for growth, which we look forward to supporting him with over the coming years.
“Thanks must also go to Mark Bowen and Michael Gilks at Reading, who have been incredibly supportive and professional throughout the process.”