I do think it is a bit troubling that eiffert is the best rebounder but not because he is walk on. I mean he is 6'6 220 thats similar in size to bonzie Colson and its not like a guy who can only rebound well would be a big target coming out of highschool.
That being said he averaged less than 10 boards a game in highschool so yeah probably not a good sign.
'Averaged nearly nine rebounds during his one season at Don Bosco Prep, where he grew two inches and gained about 20 pounds'
Add that to a couple years at Purdue going against some of the best big guys in the country every day and you have to be slow as a box of rocks not to see Grady being a great rebounder