As many as six senior defenders could be offloaded by Barcelona this summer.
Sport says first out the door will be Douglas and Adriano, who are not in coach Luis Enrique's long-term plans.
Thomas Vermaelen could be put up for sale, while Marc Bartra's future remains clouded despite his recent recall.
Daniel Alves will be allowed to move on, with lucrative offers on the table from the Chinese Super League.
Aleix Vidal, who arrived last summer from Sevilla, is also on the outer and not expected to make it to preseason at Barca.