Lewandowski is allegedly piling the pressure onto Bayern Munich to facilitate his departure, as the striker refuses to give up on his dream of joining Real Madrid this summer.
Bayern's boss Jupp Heynckes has previously noted that the German giants' chairman Karl-Heinz Rummenigge was unflinchingly reluctant to release the Poland international.
Despite the obstacles, 'Marca' reports that Lewandowski is attempting to force a move, having once seen a transfer to Spain collapse.
Real Madrid will travel to Munich for the first leg of their Champions League semi-finals on Wednesday, but Lewandowski insists that the transfer speculation will not affect Bayern's game.
He said: ''Am I thinking about Real in terms of a transfer? No, not at all. For now, I am not thinking about it. This season isn't over. We're focusing on what it is now. If you want to win the Champions League, you have to beat the best.''
The Belgian star added: ''It will definitely be a tough fight. But I hope that we'll play our brand of soccer and will be the better team.''