They missed the Mbappe and Haaland trains already. PSG extended Mbappe's contract and Haaland has joined Manchester City. For now, I see Lewandowski as a very good option for them actually. He might be a little old like Benzema but we saw what Benzema did this season. Lewandowski might even do much better and I don't think that he would have serious adaptation problems here too.
I agree with you. Lewandowski is a potential target to sign by Real Madrid right now. He already said to leave Bayern, so there is a big chance to have an agreement with him and Bayern management. I don't think Lewandowski is too old to sign and he is still in a good performance. It should be a good idea to bring him to Bernabeu as Benzema's partner in the attacking line.