I dont know about signing Icardi but I could see us going all in on the 433 and selling Dybala. We have some good wingers and Higuain would be better suited to the 433 so formation wise I could see us selling Dybla rather than us switching to something with 2 strikers and a CAM like what Italy played in 2006 WC. We have just got Costa, Bernardeschi, Cuadrado and Pjaca will return. So if anything Dyblala seems the odd man out in a position sense.
It would be a shame to sell Dybala tho as he is our best player and superstar. I love him but the club is probably asking themselves if we are better with a 4231 with Dybala or a more solid 433 without Dybala has more depth in the wing positions and CF? I would like to see this offense given more time to continue to develop as it is. Icardi buyout clause seems not as crazy as it used to these days at 110m. He is young, proven in Italy and would suit a 433. Also considering what players are going for currently his value is actually probably more than his buyout clause or would continue to grow.