Raiders' McClain kicked out of practice after argument with coach Allen

Rolando McClain got into a heated discussion with Raiders coach Dennis Allen during the individual portion of practice, according to team sources.

The exchange escalated and ended with Allen essentially booting McClain, a middle linebacker, off the field and sending him home, the sources said. Allen told reporters he was not sure if McClain would practice with the team Thursday.

McClain already has a checkered history during his stint with the Raiders.