The 23-year-old central defender will not play for Sunderland in the Premier League this season, as the club has loaned him to Swansea City in the Championship. Sunderland's Director of Football, Florent Ghisolfi, stated on the club's website that they are looking forward to seeing how Seelt develops at Swansea this season. This move shows the trust Sunderland has in Seelt and their plans for his future. Seelt has played 21 official matches for Sunderland since joining the club in 2023, when he was signed for around two million euros.