Soweit ich mich erinnere nicht
In den Regulations zur EHF CL steht unter Punkt 11.3.5 bis 11.3.7.:
A late entry of a player is not permitted during the Group Phase of the EHF
Champions League, if the player already appeared on the match report of at
least one game of the EHF Champions League with a different club.
If a player changes clubs after 17 March 2025 (national or international transfer)
he shall be eligible to play for the new club in the EHF Champions League via a
late entry only if he did not play in any official club match (national or
international) for another club between 17 March 2025 and the date on which
he changed the club.
A late entry of player who already appeared on the match report of at least one
game in either the EHF Champions League, EHF European League or EHF
European Cup is permitted one (1) time per season under the conditions
mentioned in point 11.3.
Heißt also, ein neuer Spieler darf nach der Gruppenphase nachgemeldet werden.