You will have free time eating at my Office? Will you mind if I will invite my Bank Manager, because it will be impossible if your bank manager, I invalidate proceeding.
You will have enough time to eat at the office of me? You mind if I bring with me to the bank manager. It would be impossible if the bank manager's approval to proceed.
Do you have time to eat at my office?? Would you mind if I invited my bank manager. Because it will be impossible if my bank manager disapproved of proceed.