A 22-year-old college football player sustains a rough hit on the field during a practice for their biggest game of the season in 2 days. The player was knocked to the ground after a collision with another player. They appeared to lose consciousness for approximately 6 seconds but recovered and was helped to the sidelines by fellow teammates. On initial sideline evaluation, the player reports feeling dizzy and a mild headache. They deny neck pain, have full range of motion, and no other distracting injuries. At a 5-minute reexamination, the player reports feeling much better, is no longer dizzy, and the headache is mild but resolving. The player shows no gait disturbance or focal neurological deficits. The player is anxious to get back to the team to continue practice. What is the next most appropriate clinical intervention?