Mark Sanchez doesn’t know what his long-term future holds in Denver. He doesn’t know what his future holds this week, even. But the veteran quarterback wants to make one thing clear: He wants to stay in Denver. A day after Trevor Siemian was appointed the team’s starting quarterback for its season-opening Super Bowl rematch with Carolina, Sanchez stood in front of the media at the Broncos’ practice facility to address his uncertain status. “I want to be here.