There is a lot of quality within the youth ranks that have potential to do big things. The problem is, do the club have the patience these days? There is high pressure on managers to win trophies and this makes it difficult for them.
With Digne leaving though, this now leaves a spot for one to step into, as Alba needs back-up in that position and I reckon Valverde will want to rest and rotate more in the league this season. It looks as though that man will be Juan Miranda, who has a lot of potential and has impressed in pre-season. I do personally believe that giving the position to Cucurella might have been more ideal though currently due to age. Miranda looks as though he has even more potential than Cucurella and is impressing a lot more, although at 18 it could be rushing him. Maybe a season in the B team would have made more sense first? Then again, he is a real talent and maybe he is ready to be a part of the first team set-up.
Let's also note that Miranda recently signed a new deal for 3 years, with a clause of 200 million euros. This shows the club's intentions of keeping the most talented young players. Oriol Busquets himself now has a huge clause if I'm not mistaken. There is hope.