After witnessing all of these transfers by Saudi Arabia teams this summer I started to wonder if they come knocking at Lewandowski's door as well. Because he is also 34 years old now and his situation is not much different than Benzema. His career has also been very successful so far and he is still a very beneficial scorer in general. But his age is quite suitable for rich teams from Saudi Arabia to convince him to play for themselves. Benzema has just left for Al Ittihad and the offer was really incredible.
If Lewandowski is also offered a huge package like that I think he would think about it seriously. In that case it would be really bad news for Barcelona because it isn't easy to find a striker like him right away.
In August he will also be 35 years old, but he is still very fresh and still capable enough. Also Lewandowski contract is around four seasons with Barcelona until 2026 and his dream all this time to be at Barcelona so I think for next season he will still be in La Liga, although the Saudi offer a lot money to him. But no one knows the future, maybe also like you said Lewandowski will seriously think about it if there is a big offer for him, and yeah that would be bad news for Barcelona if that happened.