Bigger? Millsap was measured with a longer wingspan, higher weight and equal standing reach at the pre-draft combine. Their sprint and lane agility numbers aren't all that different either.
Wouldn't that be a disappointing outcome though? The Jazz let Millsap go so they can move up in the draft to draft a player similar to Millsap and acquire what will likely be two late first round picks. Effectively, it's Millsap, Carroll and ~#14 pick this year for Millsap-like player, #23 and a 2017 1st round pick.
Never saw Millsap as a freshman, but I don't think he was as big as Randle, physically.