Oracle Fusion Financials without Fusion Expenses

We are implementing Fusion Financials with third party software Concur integration for employee expenses (without Fusion expenses), but we want these expenses to be paid from Fusion Payables. Please let me know if we need to create employees as suppliers when we are importing approved expenses for employees from Concur into Oracle Fusion Payables?

Please also clarify in the same scenario if employees need to be created as suppliers if we import ERs through FBDI instead of importing directly from Concur.