There is a lot of young, underutilized talent coming onto the free agent market this off-season. We all know the big ticket guys, and the medium ticket guys, but these 10 guys have all produced at certain points in their careers, and are all 26 and under:
Spencer Hawes, C, 23
Kosta Koufos, C, 23
Jason Thompson, FC, 25
Marreese Speights, FC, 24
Anthony Randolph, PF, 22
Brandan Wright, PF, 24
Landry Fields, SG, 23
Brandon Rush, SG, 26
Nick Youn, SG, 26
Jerryd Bayless, G, 23
All of these guys would play well off of Rondo, and each of them bring at least one NBA skills to the table - shooting, rebounding, shot blocking, defense, etc...
None of them have ever played with a realy pointguard for a full season, and at their ages, still have plenty of room to improve.