Spooks: Could Matthew Macfadyen appear in the movie?

Empire Online mentions it could be a possibility.  

 but will there be a reappearance from Matthew Macfadyen as old fan favourite Tom Quinn, last seen in the garb of a private contractor? [Bharat] Nalluri isn’t ruling it out. “We brought him back in the very last episode of the last season,” he hedges. “Make of that what you will...”