Complex sentence: After concerns and criticisms of Marc Trestman's offensive play calling, in his first year, the 49ers brought back former coach Bill Walsh to act as an administrative assistant, largely to help coach Trestman orchestrate the technical side of the West Coast Offense.
Split into simpler sentences: After concerns and criticisms of Marc Trestman's offensive play calling, in his first year, the 49ers brought back former coach Bill Walsh to act as an administrative assistant. Largely to help coach Trestman orchestrate the technical side of the West Coast Offense.