I wouldn't be surprised if all we announce are a few more players leaving.
De Graafschap is currently at 40 points, and is fighting for promotion to the Eredivisie. They're in third place, though second place is Ajax's reserve team which can't be promoted. If they slip, they'll be in a promotion play off (fourth place is tied with them on points so promotion is no sure thing).
I think Mistakidis is sure to get a lot of time with this team (he'd be the second-most-valuable player on their roster, even with his drop since his injury). This might be a half decent move for him as he has a chance to really stand out there, and half the work of getting to a top flight is already done. This is assuming, of course, he plays as well as he did back in the day.