Re: can Biyombo still grow?
If you believe McHale, Garnett grew three to four inches from the time he was drafted over the next three or so years. He's still listed at 6-10, but is probably legit over 7 feet. So it's not impossible.
Weather he's 18 or 20, if they can show his growth plates are still in a state where continued growth is possible, I'm not sure there's a huge difference in the age as far as physical development goes.