The 33-year-old defender is out of contract at the Priestfield Stadium in the summer, and fears caretaker boss Ronnie Jepson's plans to revamp the side could see him out of the door.
"There's going to be a lot of changes in January - he wants to bring his own players in," Hope told BBC Radio Kent.
"That's why I'm frustrated that I'm injured, as I want to be out there proving myself."