There have been rumblings all offseason about Colin Kaepernick not being committed enough to his football career, and those concerns apparently still exist for some NFL coaches and executives. ESPN’s Mike Sando recently conducted his fourth annual QB Tiers survey, which asked 50 NFL coaches and execs to sort 36 quarterbacks into five tiers. One of Sando’s takeaways regarding Kaepernick is that the 29-year-old’s passion for football is still being questioned. “Everyone else is worried about him working, but I never hear him say how much he wants to work,” one voter said. “That hits a chord. People want to hear, ‘I want to work in the league, I want to work for you, I want to do this more than anything.’ It’s like with Tim Tebow — he’d rather be on the outside switching sports than be relegated to the [third team] and getting 20 percent of the reps.” For what it’s worth, Kaepernick came in at 29th overall with an average of 3.88 for his tier.