can you knee a ball back to the goalkeeper
Back-pass rule While not an infringement of the back-pass rule, players are also prohibited from using a deliberate trick to pass the ball to the goalkeeper with a part of the body other than the foot to circumvent the rule. This would include, but not be limited to:
Direct free kick A goal may be scored directly from a direct free kick, but only against the opposing side (i.e. an own goal may not be scored). Should the ball directly land in the kicking team's own goal, a corner kick is awarded to the opposing team.[1] A player may be penalised for an offside offence committed from a direct free kick; with the exception of receiving the ball directly from a goal kick or corner kick.