The only Barca players I'd be interested in are Artur, De Jong, Griezmann and possibly Dembele (weak mentality but very talented, on a year loan) but I doubt any of those are available. Not including you-know-who for obvious reasons.
The problem is, Barca wants to get rid of the players who are either not playing well, too old, on high wages or all of the above. I can see their logic, but why would anyone want to do them a favour?
They struck gold with the generation of Messi, Iniesta, Busquets, Pique etc but La Masia is not some magic conveyor that can keep producing world class stars every couple of years and their transfer deals have been of mixed success. I believe that Neymar fiasco was a hige blow to their plans because they were grooming him to be a successor to Messi.