"We'd love Reuben to be on this team," York told NBC Sports Bay Area's Matt Maiocco last month. "And we'd love him to participate for us. But if he's not doing things off the field that allow us to be able to rely on him -- or he's doing something that we're not comfortable with off the field and it's proven that's what's going on -- I think [general manager John Lynch, coach Kyle Shanahan] have said then you're just going to have to move on."