Vincent. Yuri by association to Vincent, since Sion told Itachi they were close. And Jaina kind of rubbed him wrong during Goldie's truth or dare so there's a negative association there, too.

But really, in the end it's mostly just Vincent. :B The thing with Jaina could be smoothed over if he cared to bother, and it's not even personal with Yuri, he doesn't really know him, it's just distrust by extension.

What are Knife's favorite kinds of games?