This is why Barcelona needs to sell Lewandowski to the Saudis, if they show interest in him after his contract expires in 2026. The money from his sales can be used to bring in two or three young quality players to the team, and a striker to replace him. It's left for Barcelona to do their calculations and plan for Lewandowski exit, because it will help the club financially.
I fully support the sale of Lewandoski because Barca needs a younger striker for the long term. However, Lewandoski's sale won't be enough to sign another top striker. The highest Lewandoski will sell for currently is 50 million, and I don't see any striker they can get for less than 50 million who can do better than Lewandoski.
Barcelona needs a LW and a striker, I feel they should sign Lookman and Isak or Gyokeres, and then Raphina can play as a 10 behind the striker. So that means they will have 4 attacking players who can all score and create chances for teammates to score. They already have a good midfield and defense but they can get another CB if necessary and they need a long term goalkeeper.