Greek/Hebrew Siddur

Hi everyone, first time posting here. I am searching hard and wanted to reach out to see if anyone here may be able to help. My family are part Romaniote Greek Jewish and my grandparents grew up in Greece but not religious. Recently my grandfather has taken more interest in becoming observant like myself and wishes to pray each day but has difficulties with Hebrew. I am looking for a Siddur with Hebrew and Greek translations so that he can still connect with the prayers in a meaningful way while learning the Hebrew better. I have searched and searched with no luck. Any help is appreciated! Thank you.