I think Inter's Plan A is get Diego Simeone once he leaves Atletico after next season. There's is no Plan B.
Barcelona's board is already unpopular among most fans and selling Neymar will guarantee them not being re-elected. They've made some really awful buys such as Douglas (not even Barcelona B quality), Vidal (can't stay healthy), Mathieu (Valencia bargain bin), Vermaelen (see Vidal), Turan (his best position does not exist at Barcelona, I said this when he was signed), Andre Gomes (square pass master) and Paco Alcacer (see Mathieu).
In retrospect, signing Cesc Fabregas hurt Barcelona more than it helped. Tito Villanova playing Fabregas instead of Thiago late in the season with the title already won to match Real Madrid's 100 point total the season before meant that Thiago didn't meet his playing time quota thus his buy out went down to an amount Bayern could easily afford. Barcelona could really use Thiago right now.
The year after, with Messi injured, Tata Martino decided to put Fabregas at false nine instead of Alexis Sanchez which meant 0-0 became a very common scoreline during that period and probably cost Barcelona the title and forced Sanchez out of the club. Admittedly, Luis Suarez doesn't come here if Sanchez stays, but the money used to get Suarez probably could have been used to get a Verratti, Cuadrado, etc.
It also doesn't help that Luis Enrique has basically abandoned La Masia. Granted a generation of Xavi, Puyol, Messi, Pique and Iniesta are once in a lifetime and incredibly hard to replace but Barcelona has pretty much loaned out anyone of promise during Luis Enrique's reign (Bartra, Deulofeu, Sergi Samper, Halilovic, Munir, Tello). Only Sergi Roberto has gotten playing time but he is being played out of position at RB.
Just looking at the ages of the starting eleven shows that Barcelona need to make some moves over the summer:
Ter Stegen (24)
Sergi Roberto (25)/Vidal (27)
Pique (30)
Umtiti (23)/Mascherano (32)
Alba (28)
Busquets (28, but an old 28)
Rakitic (29, but an old 29)
Iniesta (32)
Messi (29)
Suarez (30)
Neymar (25)
Only Ter Stegen, Umtiti and Neymar can I see being locks in the starting 11 five years from now.