Agravanis played from a young age with the youth teams of Doukas, before he started his pro career.

Agravanis began his pro career in the 2016–17 season, with the Greek 2nd Division club Doukas.

On August 9, 2017, Agravanis moved to AEK Athens of the top-tier level Greek League.

Subsequently, Agravanis signed a three-year contract with Promitheas Patras, which then loaned him to the Greek club Charilaos Trikoupis, for the 2020–21 season.

Agravanis' older brother, Dimitris, is also a professional basketball player, and he currently plays with Promitheas Patras.