I think he likes the prospects, but there's a reality here. JBJ is probably much better than he was last year, and Renfroe likely had a career year offensively he's doomed to never repeat. With reasonable regression Renfroe is likely only marginally better than JBJ, throw in the prospects, JBJ becomes the defensive 4th, and you sign a stud that doesn't cost you a draft pick to replace Renfroe and you have a winning strategy.