Can not see it as being Aarons good player but simply not enough experience or pace, he is AT but i rate Frimpong better, I do not see Gundogan going but he will certainly not be playing DM, as much as Pep said he liked Aouar i think that is all it is and he offers nothing that Rodri does not , Camavinga does and is the better player.
As for Alaba he knows his days at Bayern are numbered with Davis behind him and wants a move to Barca, Barca want him to replace Firpo but Barca are skint fee and wages they will do mainly swap deals, Coutinho anyone? even on a free as they have not paid all the fee to liverpool yet, due to clauses not being met Alaba may come because of Pep, a good manager and wages goes a long way