The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The issues that should be covered in the negotiations between your organization and the outsourcing organization are the following.
As it is written in the question, the corporate culture of the outsourcing company is one of the issues to be discussed because it is important that the outsource company understand your values, mission, and mission, so the relationship could be professional and amicable.
Then, one important aspect of the negotiation must be the lines of communication to be "on the same page."
Another issue is the services to be provided, the price for each service and the way results are going to be measured.
As important as the previous issue, is the quality of the people who are going to be temñporarly hired, so there are no big differences between the quality of work from the employees of your company vs. the employees recommended and hired by the outsourcing company.
The level of expertise at suppliers is a major concern of your company. The outsourcing company has to show ways provable ways that guaranteed the expertise of suppliers.
One final important aspect is the solution of controversies in case there are problems between suppliers and your company, knowing that the outsourcing company is responsible for the hirings and contracts with the outsourced workers.
