Or “your sales guy is making a little backup of the leads from the CRM before handing in notice”.
Though with sales orgs I think this is almost an expected practice - sales people are often hired on the tactit, never officially acknowledged basis that they will bring their leads list.
Years ago I got a job through a recruiter, left company A for B. She called me after a few months and asked me for the Compsny A internal directory - which I declined to provide and she got kind of nasty about it. Maybe ten years later I was at company C and my manager mentioned hiring a recruiter - same person. I mentioned our previous interaction (not out of spite, just a naive narrative) and they stopped working with her immediately. My point being - your behavior has a long tail, so don’t be trying to take advantage.
Though with sales orgs I think this is almost an expected practice - sales people are often hired on the tactit, never officially acknowledged basis that they will bring their leads list.