I’m going to make this one short and, hopefully, sweet.
There are many pitchers who have been parts of trade rumors for the Cubs: Mitch Keller, Merrill Kelly, Zac Gallen, Sandy Alcántara, Edward Cabrera and others.
One starter I think the Cubs will go after, and likely acquire — not saying they might not acquire more than one, but this screams out “obvious” to me — is Adrian Houser, now in the White Sox rotation.
It seems absolutely clear to me that the Sox signed Houser in May, after he was released by the Texas Rangers, to flip him if he pitched well.