I assume that the person is not on your payroll and you would like to convert them to a payroll employee. OFCCP does not address how to handle situations like this or incumbent hires. Obviously, it does not make sense to post the position if you already have the candidate; however, it would be prudent to list the job with the state employment service since they will appear in your applicant and new hire data. I would not bother with any other outreach.
You can use this OFCCP audit checklist to ensure you're doing what is required to maintain OFCCP's regulations including VEVRAA, Section 503, and EO 11246. Or request a demo to streamline your compliance and recruiting efforts.