Soak the rice in cold water.
Cut the cabbage in half and remove the core.
Remove leaves from cabbage leaving the harder middle section and set aside.
Bring a large pot of water to a boil.
Add 1 tsp oil to a hot skillet. Cook onions till slightly tender. Add garlic, paprika, 2 slices of the pancetta, chopped, and cook for 2 minutes.
In a large mixing bowl, add pork, onion mixture, salt and pepper. Drain and add rice. Combine thoroughly and set aside.
Blanch cabbage leaves for 1 minute and remove to bowl
Line a Bundt pan with the cabbage leaves, reserving enough for a top layer. Add the meat mixture to the leaves making a round meat loaf.
Fold remaining Pancetta and line top of meat mixture.
Top with remaining cabbage leaves and roll and tuck into the bottom layer. Add a bit more salt an pepper to the top.
Bake in a 300 oven for at least an hour, or until the pork hits 180 degrees F.
Flip Bundt pan to serving plate, and let cool.
Slice and serve.