"But you're not picking this one up." He reminded with a smile. "This one's going to be a big-glass-box friend. And when we leave, we're not taking him with us." He didn't mean that, of course.. okay, maybe he did. Once they let everyone out of the box, they were on their own. He'd take Rose and he'd get the heck away from this place and never look back. Or, at least, that was what he wanted to do, and that was what he would tell her that he'd do. But if this place was the only thing keeping him from regenerating, then when he left, he'd turn into Ten. And that'd be that.
No more adventures, no Barcelona. He might have said more, but a moment later, the barn door was opening and the Cajun was coming back in. He paused and faltered some when he saw the two, but then broke into a wide smile. It made the Doctor smile, too. This must have been the Frenchman. "Hello." He greeted with a wave.