I am buying into an existing company, in which I will also assume an important C-level position. The arrangement is that I will invest my money over 6 months. We are stuck on what happens if at the end of the 6 months we decide to part ways. I want to be repaid within a fixed period of time (6-12 months), but the company does not want to be tied down to any time limit for repayment. Do you have any other ideas as to how to structure this part of the agreement?