Now, work between the two clubs is required to find an agreement on a fee.
BILD journalist Tobi Altschäffl claims that Bayern Munich are against the sale of the striker.
However, discussions over the sale of Lewa could commence should an offer of €40 million arrive.
Despite his age of 33, he remains one of the best forward's in world football and still has another year left on his contract with the German club.
He netted an unbelievable 50 goals in 46 appearances last season showing why Bayern are still asking for good money for him.
The striker has already made his desire to leave Bayern public by claiming his "era" at the club is "over".
We now wait to see whether Barca have the finances to be able to offer the €40 million which Bayern want.
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