Sixers wrap up camp in Colorado with Harden situation still up in air heading into preseason play

There's also the frequent sound of a shrill whistle as new Philly coach Nick Nurse halts practice to offer pointers on the free-flowing offense he's installing. The noise around disgruntled guard James Harden and his trade demand have been tuned out. Harden's been steadily ramping up his participation during a training camp held on the campus at Colorado State that came to a close Friday.