49ers coach Jim Harbaugh says "it's possible" that wide receiver Michael Crabtree could return to practice this week. Crabtree is recovering from a broken foot. According to a source, Crabtree fractured his left foot during a player-run practice in San Jose on June 6. He had surgery on the foot before the start of training camp. He is unlikely to play in San Francisco's preseason finale and his status for Week 1 is undetermined.