https://x.com/Jack005lfc/status/1963284074279440657
As far as I understand, due to not signing Guehi , we cannot register Federico. We don’t have enough homegrown players anymore. Rio Ngumoha takes his spot crucially Rio does not fulfill the homegrown spot so it was a toss up between the 2.
I am so sorry for him . 
Edit
Liverpool’s Champions League squad is limited to 22 due to UEFA rules requiring at least 8 locally trained players for a full 25-man list. They appear to have only 5, capping it at 22 (17 non-locally trained + 5).
Chiesa is excluded likely due to ongoing fitness concerns, as he’s still ramping up after limited play. He could be added later if rules allow.
I don’t know what to think about that tbh, this must be depressing for Fede.