Distinguish between expenses paid by company issued card vs employee personal card

Summary:

Distinguish between expenses paid by company issued card vs employee personal card

We have the following scenario-
Employees have been given corporate card to meet the business expenses.
Once employee submit the expenses for reimbursement, company will process and pay to the credit card company directly (credit card has been setup a primary bank account)

However due to unknown reasons, if employee uses his personal card for the business expenses the same needs to be processed to his personal bank account (personal bank account has been setup as secondary bank account)

As we have a limitation of having only one primary bank account, how can we process the expenses which are incurred out of this personal credit card and process to his personal bank account?