That's what I feel is why Xavi needs to look for a pure striker like Lewandoswki. Ansu Fati is not a center forward and Fati's real position is as a winger. It will not be optimal to make it an option to cover Lewandowski's position.
Ansu Fati is like a forward than a winger but he has to show his ability more if he is too slow, he will be sold out. Barcelona can not wait for Fati too long as three seasons since his debut for Barcelona in 2019 -2020 season, he has been given some years to grow up.
Ansu Fati profile and there is rumor that Barcelona want to sell him to get money and it seems time is counting down for him. A coming season is important for Ansu Fati future in Barcelona and he should not waste that chance.
Yes, I am aware of the rumors that Ansu Fati is for sale.
There is nothing shown by Ansu Fati that makes Xavi have to make him a core player who is included in the starting eleven in every Barca match.
If Barcelona think that Fati cannot return to his best playing form, sell him and buy another striker as I have stated above.
Lewandowski is physically good so his role this season has really helped Xavi in the title fight with Real Madrid. Very different from the attacker listed in the Barcelona squad.
Ansu Fati also often experiences injuries so his name doesn't appear like Gavi and Pedri.