best available is an option that should only be looked at by either...
a) teams that aren't very skilled or talented that just want the best recruit they can get, no matter what position
or
b) teams that don't have any more holes to fill.
we don't fall into either of these categories, therefore, we dont need a guard. and as for him being an 08 guy, who says jacob pullen and fred brown aren't going to be around??
Jacob Pullen, Fred Brown are scorers, not necessarily distributers. Josue is a distributer first and foremost. He has the capability to score, but he's a distributer before anything else.
Also, two guards is not nearly enough. We'll likely have two guards on the floor at all times, why would having a third be a bad thing?
We need a big man. There's not really any good ones available, at least that I know of. Good centers are hard to come by.
Aside from a big man, we need a shooter and a distributer. VD has a good 3 pt shot, and he's been offered. Josue is a distributer, and we should offer him. He'd still have 3 years to play after using a redshirt for his sitout year after transferring.