I need to get player with the specified name. If you look at the code, to which I have reference, you will see that i am storing all parties and players in it on the server side. If something changes in party (for example new player joined) i am sending SyncPartyPacket to all players in party, in which i am sending only player names. After receiving packet by client it must search for player with the given name in it's client world and form new client party. But if player doesn't loaded it doesn't exists in client party, so client cannot deserialize party successfuly.