I think Harrell is a really good comparison. Both good athletes, not great ones. Both big, but not massive. Both can run and both can shoot.
I like the Harrell comparison as well, although If my memory serves I feel like Solomon can easily be a bigger threat from the mid-range and out than Harrell was. But either way would love to see that type of player on our team.
I said it earlier in a different thread. Solomon's game kinda reminds me of Larry Johnson's a bit. Both know they are undersized but don't play like it or let that scare them. Both work effortlessly on boards even if they aren't the greatest natural rebounder, and Solomon has a grown mans body who likes to bang it down low, no matter the size of the man he is going up against.
Now, I know LJ is a looong shot, but little things about Solomons game really remind me of the way he played.