Bosko. He's 22 and has been playing against grown men for 3+ years. He's got length and bounce and is a good rim protector. He moves well. He's got a decent offensive game.
Based on this, my guess is he not only breaks into the rotation but gets significant minutes as a stretch 4. We dont really have that position on our current roster. Fouss and Keita are strictly 5s. Mag is really a defensive 3 or 4 only. Very limited offensive game. Catchings is primarily a 3. He can play the 4, but it doesn't seem to be his natural position.