Barca have already made an attempt to sign youth team defender Leo Balerdi this month. Barca offered â‚¬10m for the defender.
And Mundo Deportivo says they're also interested in 18 year-old teammate AgustÃn Almendra.
The winger has been promoted to the first team at Boca and is captain of the U20 Argentina team.
However like Balerdi, the response from Boca is there's no willingness to sell Almendra.