My son has a lazy attitude!?

My son is 10 years old and questions everything, he doesn't listen and has a terribly lazy attitude, he is outside constantly playing football, he isn't lazy in that respect, he can't be bothered to try do his homework, can't be bothered to empty dishwasher, and even when playing for his footy team he doesn't try hard like he used to. I am worried about him as I don't think he can "think ahead" (consequences) and so punishing him by saying ur grounded if you do that etc he just does it, then complains about being grounded next day. If there is anyone who can help me please let me know. I am desperate, I know it is down to me but I need new tactics ect. Thanks all!