Fans group the Foundation of Hearts have put forward a financial package worth £2.5m which will be submitted to creditors.
But the fate of the Company Voluntary Arrangement (CVA) lies in the hands of Lithuania-based Ukio Bankas and UBIG, who are owed the vast majority of money and own the bulk of the club's shares between them.
Locke said: "It's a massive week for us. I just hope everything goes to plan for us on Friday, while we've got a huge game on Sunday as well.
"But as far as the long-term future of the club is concerned, Friday's meeting is much more important.
"We've not been given any indication about how it will go. Last week it was delayed for seven days but everyone connected with the club just hopes we can get it sorted with a positive outcome.
"Last week after the delay, you could sense a wee bit of frustration in the stands during the Ross County match.
"We have done everything we possibly can to find a solution and the staff, the players and the fans are all desperate to see the club moving forward again. The only way we will do that is by a CVA."