Sport says Betis, who currently have Carles Aleña on loan, are keeping an eye on events at Barça with the hope of landing some of the club's young stars this summer.
Rubi's side have asked for another season-long loan for Aleña, while a more complicated deal is one to bring back left-back Junior Firpo, who moved to Camp Nou for 18 million euros last year.
The Spain U21 international is likely to enter in a deal for Inter striker Lautaro Martinez.
In addition, Betis wanted a loan with an option to buy and Barça are looking for cash now.
Rubi has also shown an interest in Riqui Puig and in a more informal manner, Betis have also asked about Ansu Fati, Pedri and Francisco Trincao.