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:
Throw-in A goal cannot be scored directly from a throw-in; if a player throws the ball directly into their own goal without any other player touching it, the result is a corner kick to the opposing side.[4] Likewise an offensive goal cannot be scored directly from a throw in; the result in this case is a goal kick for the defending team.