Aroldis Chapman is heading to the Chicago Cubs, according to a Tweet by Jon Heyman.
Coming back is a pretty good haul: Gleyber Torres, Billy McKinney, Adam Warren, and a mystery player.
Torres is the big player here. He is a 19 year-old shortstop who was the consensus #1 Cubs prospect heading into this season. While that ranking is partially a product of a number of promotions of top prospects out of the Cubs system, the Cubs are still one of the better organizations in baseball. Torres is a 122 wRC+ as a 19 year-old in High-A this year. He's probably the best prospect in the Yankee system now.
Billy McKinney was the #5 Cubs prospect going into this season, but has had less success at Double-A in 2016. His wRC+ is 101, but that masks a horrible .322 slugging percentage. Luckily, his walk and K rates are near his career averages, so he has potential to improve through regression alone. He might be around the #10 prospect in the Yankee system now.
The Yankees acquired Chapman from the Reds in return for Eric Jagielo, Rookie Davis, Tony Renda, and Caleb Cotham. Of those, only Rookie Davis has had a season that can be described as anything other than "horrible." They got two months of 105 mph fastballs out of Chapman, then flipped him for a much larger return. I'd say "Nice Job, Cashman" if the process didn't involve capitalizing on domestic violence allegations.
Oh yeah, and welcome back Adam Warren. The Yankee bullpen could use you again.