The Catalan giants are in serious financial trouble as they look to bring a debt of around £862m under control.
Barca are focusing on free signings and have already brought in Eric Garcia and Sergio Aguero from Manchester City.
However, with a new deal for star man Lionel Messi also in the offing, the La Liga side are in desperate need of some incoming cash.
According to Goal, the seriousness of the situation means that Barca have accepted that a number of first-team players will have to move on in the next few months.
It is claimed that Gerard Pique, Sergio Busquets, Jordi Alba, Clement Lenglet, Antoine Griezmann, Philippe Coutinho, Miralem Pjanic and Samuel Umtiti are the highest-profile names that have been put up for sale.
Junior Firpo, Martin Braithwaite and Matheus Fernandes are also supposedly available to purchase.
In fact, Messi, Ronald Araujo, Ansu Fati, Pedri and Frenkie de Jong are the only players deemed untouchable by president Joan Laporta.
Monaco 
Stade Brestois 29 
Bordeaux 
Nimes 
Bayern Munich 
FC Augsburg 
Paris Saint Germain 
Toulouse 
CSKA Moscow 
FC Rostov 
Leicester 
Chelsea 
Valencia 
Betis 
Dynamo Kyiv 
Chornomorets Odesa 
Verona 
Inter 
Bayer Leverkusen 
FC Heidenheim 
Borussia Dortmund 
SC Freiburg 
VFL Wolfsburg 
Union Berlin 
Arsenal 
Nottingham Forest 
Everton 
Brentford 
Spartak Moscow 
Lokomotiv Moscow 
Rangers 
Dundee Utd 
Atletico Madrid 
Alaves 
Lens 
Marseille 
Ingulets Petrove 
Shakhtar Donetsk 
AC Milan 
Juventus 
ST Malo 
Manchester City 
Tottenham 
Eintracht Frankfurt 
Werder Bremen 
Girona 
Espanyol 
Feyenoord 
Heerenveen 
ST Etienne 
Montpellier 
Grenoble Foot 38 
Heart Of Midlothian 
Celtic 
Reims 
Lyon 
PSV 
Groningen