Bayern Munich have made public their condition on selling Robert Lewandowski next month.
Lewandowski has made public desire to leave Bayern Munich this summer after confirming his intention to move on from Bavaria.
Barcelona on their own part are highly interested in the Polish international.
La Blaugrana have tendered a deal of £35m plus add-ons but was rejected by the German giants.
According to reports from Sky Sports Germany, via Mundo Deportivo, the Bayern hierarchy agreed to a sale following a meeting in Mallorca.
The striker has only one year remaining in his current contract at Alliance Arena.
Barcelona are unlikely to meet that figure, with the report adding a potential €50m bid is their ceiling within the saga, as Bayern prepare for a preseason return on July 12.