Get examined for the peripheral blood supply once using doppler to know if the blood supply and drainage
is normal since you are diabetic.
You have to do regular every day outdoor exercise and have to consume more of protein food and electrolytes rich fluid like electrol powder with food rich in potassium (banana)before sports. These will help you to prevent the leg sore during sports. Along with these take multivitamin
supplements and proper foot care
. If any neuropathy you may require Tab Pregabalin
. So consult your doctor for examination and management as explained.
Hope this helps you.