TBH I'm not sure what we should do with him next season. Sure, getting regular minutes at Las Palmas is very good at his age but the problem I've seen in some of their games lately is they just don't have enough talent around him who he could play with to further develop. He had a very good chemistry with Jonathan Viera in first half of the season but since he returned to China there is no other technically good enough player alongside Pedri there so it's not surprising UDLP as a team have also struggled in 2020, especially offensively (4 draws and 3 losses in 7 games with just 4 goals scored). If UDLP will be promoted to La Liga (doesn't seem likely with their current form but there are still 14 rounds left and they are just 4 points behind the last playoff promotion spot so anything is still possible) then Pedri will no doubt stay there (unless we would have a spot for him in the first team which I doubt at the moment) and hopefully they'll bring some better players around him to be able to compete in Primera.
But if they'll stay in Segunda then hopefully Barça B will be promoted so we can get him back. I think a season or two under Pimienta surrounded by better players than he currently is at Las Palmas would do him good. He could also train with the first team and be called up occasionally.
WWFD
What would Florentino do.