CHICAGO — Injured Chicago Bulls players Alex Caruso and Patrick Williams could resume contact drills Friday, preparing both players for potential returns at the end of the month. Both players were cleared for contact by team doctors Wednesday morning, coach Billy Donovan said ahead of a road game against the Detroit Pistons. Caruso and Williams could return to practice with their teammates on Friday, but Donovan said that decision will rely on their performance in upcoming workouts. The practice would mark Caruso’s first full practice with the team in nearly two months since he fractured his r…