Everyone is fixated on Tolle and Early, but I think I would rather go after Witherspoon. He's not going to help you this year, but his ETA is 2027 and he's got the best rated curveball and cutter in their system. And the fact he's not going to help you this year means you can get more players in the deal whereas if you are looking at Tolle and Early it's probably pretty damn close to just a 1 for 1 swap and I'm not too sure I'm sold on those guys as being sure enough for me to give up a 4 WAR player in a 1 for 1 swap.
I would probably do something like Slaten + Witherspoon + some kind of bat. Their system isn't that deep when it comes to the offensive side of the ball, so it Justin Gonzales too much to ask for? I feel like the Red Sox are already in overpay territory without him, but if the Cubs are saying they want a comparable deal to what they gave up for Tucker, I feel like it has to be Gonzales.