If Arky's collective was stupid enough to pay ANY athlete an upfront NIL of 200k before they performed ANY service, they're stupid.
I recently paid someone for a service that was ongoing. We had an escrow account that I made a deposit to, then they made various itemized "draws" as demonstrable services were provided. Upon the account being drawn down to a certain level, I made other deposits. At the agreed end of services, they cut a check to me for the remaining escrow. This is pretty standard for contractors, retained attorneys, and retained accountants, at least I have always done it this way.
If Arky doesn't have enough business sense to protect themselves ..... well, they ARE Arkansas, I guess.