It is impossible for Luis Suarez to return to Barcelona because the basis of Suarez's sale to Atletico Madrid is because he is no longer young and Barcelona needs younger players because of Barca's busy schedule. I think you still remember the reason why Barcelona officials let Luis Suarez off a few years ago.
Suarez and Messi were in very good form in Barcelona. However, the Barcelona management did not extend the contract with them because they are now looking for young talent. Xavi is not interested at this moment on Messi or Suarez. He is now keen to invest on young players. However, Barcelona is now keen to sign Lewandowski, as they now need an experienced striker to win next season's title.
Lionel Messi left Barcelona in 2021 based on the admission of the president of Barcelona, Juan Laporta, because the Blaugrana suffered a Financial Fair Play collision so that Messi could not be retained. Meanwhile, Luis Suarez is considered no longer able to compete in major competitions. Isn't it like that?
Looking for an experienced striker, I think Barcelona's choice of Lewandowski was the right one.