Eloy Jimenez is MLB Pipeline's number 8th ranked prospect on their Top 100 list while Dylan Cease is 63rd.
The Cubs' need for another quality arm in the rotation has been apparent all season after their off-season acquisitions of Brett Anderson and Eddie Butler hadn't panned out as planned (although Butler hasn't been very bad like Anderson was).
Jose Quintana has been one of the most consistent pitchers in baseball for the past four years.
To put things in perspective, Quintana had as many quality starts last season (23) as Chris Sale, and more than guys like Noah Syndergaard and David Price.
The move was no doubt made to bolster the Cubs' rotation, which, a year after having the best ERA in the majors (3.15), is now ninth-best in all of baseball and fifth in the National League at 4.10. Jake Arrieta has struggled and Kyle Hendricks has missed time with a hand injury.
It's possible to envision a scenario where Quintana pitches his best down the stretch, and an unexpected event or injury creates a need for a team with greater prospect wealth. And even with Quintana, it still might be.
They've been talked about as if they're still the favorites in the NL Central because they've only been a game or two back of the Brewers, but they enter the second half five-and-a-half back. As revenue grows, that might be backup-catcher money by 2020. Not just because it was a trade between the crosstown rivals, but because it was a blockbuster deal involving one of the best pitchers in baseball and one of the top-rated prospects in the game.
Obviously there are always other factors in play, but in just looking at the level of talent there and how long they can all be kept on the same team, that's a position-playing nucleus with the window of contention wide open. It won't be much, but anything is more than they'd get when he walks as a free agent (assuming a qualifying offer isn't remotely likely).
"I'm focusing on doing my job", Quintana said.
So what about Jimenez? "Potential middle-of-the-order impact bat, plus bat speed, feel for the barrel, uses the whole field and has the tools to be a plus defender on the corner". He's already starting to fill out a body that will probably look like the Chrysler Building by the time he's 25.