Buzz builds for Bears' Luther Burden, even as 2nd-year WR leaps have proven tricky

The most important people inside Halas Hall have been lining up to declare how successful Bears receiver Luther Burden will be in his second year. “He’s the truth,” tight end Colston Loveland said in May. “I’m buying Luther Burden stock right now,” coach Ben Johnson said in June. Earlier this week, general manager Ryan Poles added to the shot-calling symphony. “We’ve got to go play games and he’s got to finish this thing off ,” Poles said. “But if there’s a guy that I’m really excited about,…