Ceballos has become hot property since the end of the 2016-17 campaign after starring for Spain in the European Under-21 Championship in Poland.
The Clasico rivals have both been linked with a move for the 20-year-old and have officially approached Betis regarding a transfer.
Ceballos has kept silent on his future and Haro expects the youngster to remain with the club despite interest from the Blaugrana and Los Blancos.