Best way to do this database design

[xionhack]

Hello. In my business logic, I have a user, a company (users can be part of the company) and products. 

A product can be owned by a user or by a company, the company can assign it to a user later, but it would still be owned by the company (in case the company fires the user). 

My thought is to have the user table, the company table and the product table. 

I'm thinking about having a product_owner table, where I would have product_id, user_id, company_id, agent_assigned. 

If the product is owned by a user then only product_id and user_id will be filled. If it's owned by a company, then product_id, company_id and agent_assigned would be filled. 

Is this the best way to do it? It doesn't seem good to me.

[dakota367]

Can a user be a part of multiple companies?