Barca remain locked in talks with Inter Milan over a deal for Lautaro.
“It would be an advantage for us, but Lautaro's still young," Scaloni told TyC Sports.
“He has a lot to learn and also, like happened at Inter, he has to fight for his place at Barca.
“We must give him time to get where his compatriots like Aguero are: he certainly has a great future ahead of him, but I repeat he still has to improve a lot.
“There's a lot of talk about Lautaro right now, but Kun [Aguero] is breaking every record: from time to time, we'll decide who we give our [No 9] shirt to.
“After all, should he really go to Barcelona, the Blaugrana coach would have the same problem as me: picking who to play from an array of top forwards."