SI Now: Clint Dempsey must step up as U.S. men's national team captainOn Thursday's SI Now, SI.com senior soccer writer Grant Wahl says "lone wolf" Clint Dempsey isn't a natural leader, and that's why Jurgen Klinsmann chose him.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceOn Thursday's SI Now, SI.com senior soccer writer Grant Wahl says "lone wolf" Clint Dempsey isn't a natural leader, and that's why Jurgen Klinsmann chose him.Published Jun 5, 2014 | Modified Jun 5, 2014SI STAFFShare on FacebookShare on XHome/Soccer