Whitney Young senior point guard opted to end his recruitment on Tuesday night as he selected South Florida.
The 6-foot-0 floor general helped lead the Dolphins to an IHSA Class 4A state title last season as he'll be one of the main players to watch at Whitney Young once again this season.
Castaneda is the second Whitney Young player to commit in recent weeks as he joins senior Javon Freeman, who committed to Valparaiso.
The Bulls are getting a natural distributor in Castaneda as he can get others involved while also hunting for his own offense. South Florida head coach Brian Gregory has recruited Chicago before as this could be the start of him looking to get back into the area after taking the USF job this spring.
Castaneda will be a major threat for the All-Area team this season as he's one of the best playmakers on a high-profile team that will compete for a city and state championship.