get the front end up on axle stands both sides. start the car up and get him to go up threw the gears, at the same time you get as close as you feel safe and check for the knocks bangs and clicking etc, look for any dodgy movement, if its the driveshaft/cv joint it wont stay in a solid position it will move in a circular motion whilst its spinning, cv joint may also click.
i would say also check the top of the n/s (passenger side) front strut, see if its been knocked loose from hitting the curb.