Barcelona economic vice-president Eduard Romeu says they must move players out of the club if they're to sign Bayern Munich striker Robert Lewandowski.
Lewandowski is pushing to join Barcelona this summer and declared his time with Bayern was "over" earlier this week.
However, Romeu admits there's much needs to happen if the Pole is to arrive.
He told RAC1: “Robert Lewandowski? For now, it's not possible to sign him, considering the LaLiga regulations.
"But if we manage to collect the equivalent of three times his salary, plus depreciation, it would be possible..."