Creamy Chicken and Wild Rice

This is another one from the swap I was in by Lori.

6 Tbsp butter
1 tsp chopped garlic
1 tsp minced onion
1 stalk celery, chopped
2 cans cream of chicken soup
1 chicken breast, cooked & diced
1 box Uncle Ben's Wild Rice, cooked/prepared
1/2 tsp salt
1/2 cup flour
6 cups chicken broth
2 cups milk
1 can mushrooms

Melt butter and saute garlic, onion and celery. Blend in salt and flour, stirring constantly. Add broth. Bring to a boil. Stir for 1 additional minute. Add rice and blend in milk, soups, chicken and mushrooms. Heat through.