Trent Alexander-Arnold has worn the No.66 shirt throughout his career at Liverpool but he will not be able to wear that number if he joins Real Madrid this summer

If Trent Alexander-Arnold follows through with his move to Real Madrid, he will have to say goodbye to his shirt number 66. As the 2024–25 season draws to a close, Trent Alexander-Arnold's future is coming into focus.

For instance, Raúl Asensio, a young talent at Real Madrid, was granted an exception to wear the number 35 jersey, as he was not subject to standard registration like senior players. However, for established players like Arnold, the implications are clear: his cherished number 66 will not be permitted if he makes the transfer to Madrid.