Robert Lewandowski is not hiding anything. He has said publically that he wants to leave for Barca. A direct message to Bayern who, at the moment, have rejected 'Los Azulgranas's' attempts to sign him.
'Sport' reports that Lewandowski has had his mind made up for months. At first, Bayern were unsure whether or not to renew his contract. In April, the club then decided that they wanted him to stay. However, by that time, it was already too late.
From April up until now, Bayern have been trying to convince the Pole to stay. According to the aforementioned source, the Bavarian outfit promised him that they would form a team with enough quality to fight for the Champions League. That they would sign Mane, Mazraoui and Gravenberch, amongst others.