I am having contrary opinion with regards to whether Barcelona should sell Lewandoski, l think Barcelona has many young promising players who could gain from the wealth of experience offered by Lewandoski, to get a young quality striker would cost Barcelona a lot of money considering their present financial issue, from my own point of view the club should keep Lewandoski and start grooming a new striker from the club academy just like how Yamal was promoted with his talent and quality which is already helping the club, Lewandoski had been in the game for a very long time his presence on the field would enable him motivate his younger team mates.
From what I read regarding this subject, Lewandowski wants to stay longer in Barcelona and he has nothing that urges him to quit before the end of his contract. He has already a year in the contract and Barcelona wants to extend it by another year, so until 2027, but they will try to do some tricks with his salary to avoid fair play troubles.
Barcelona needs Lewandowski for two reasons at least, first he is doing well, scoring and topping the best scorers with 20 goals, +3 more than Kylian Mbappe, secondly because they indeed do not have an alternative for him.