The 26-year-old joined the Spanish champions from Sevilla last summer but has been unable to make his debut until this month due to the club’s transfer ban.
Vidal spent one season at Barcelona with the Under-14 B team in 2001-02, but urges those who progress right up to the B team to take advantage of the opportunity of being able to train with the senior players.
"If the club has released players it's because they think it's better for the team,” Vidal told RAC1.
“With the age many B players have, if I had had the opportunity they have had, to be able to train with the first team, I'm convinced I would have taken advantage of it.
“Instead there are boys who at best have not made all the effort they should have made, and now with nothing left, they have to look for a new start."