Philippe Coutinho and Antoine Griezmann are among the players negotiating new contracts with Barcelona as the club looks to make short-per cost-cutting moves.
Sergio Busquets and Sergio Roberto are also in talks on renewed terms.
Gerard Pique, Marc-Andre ter Stegen, Frenkie de Jong and Clement Lenglet have already agreed new deals.
The wages for the players will be remunerated in the latter years of their new contracts.