FWIW here's what Ken said about him, mostly focusing on comparable trades:
Quote:
So, what kind of return should the Reds expect for Castillo, who is under club control not only for the rest of this season, but also the next one?
Consider two recent deadline trades for starting pitchers at the same level of service Jos Berros, who went from the Twins to the Blue Jays in 2021; and Marcus Stroman, who went from the Jays to the Mets in 2019.
Each deal brought two well-regarded prospects, and each included right-hander Simeon Woods Richardson, the 48th selection in the 2018 draft. For Stroman, the Jays acquired Woods Richardson and righty Anthony Kay, the 31st pick in 2016. For Berros, the Twins acquired Woods Richardson and shortstop Austin Martin, the fifth pick in 2020.
The performances of those players have yet to match their pedigrees. Woods Richardson, 21, has a 3.40 ERA in 11 starts at Double A, but currently is on the injured list. Martin, 23, is struggling offensively at the same level. Kay, 27, has a 5.48 ERA in 28 major-league games, and is currently on the injured list with the Jays at Triple A.
The Astros' deal for Gerrit Cole in January 2018 also was somewhat comparable to the situation the Reds face with Castillo, though Cole was under club control for two full seasons, as opposed to one-plus. For Cole, the Pirates acquired right-handers Joe Musgrove and Michael Feliz, third baseman Colin Moran, and outfielder Jason Martin.