However, it shouldn't be shocking. San Francisco 49ers coach Jim Harbaugh said while he wouldn't count Bowman out for Week 1, midway through the season is more realistic. Harbaugh is simply being cautious and showing that Bowman will not be rushed back. It's the right approach.
Bowman hasn't suffered a setback. The normal ACL recovery time is 6-9 months from the time of surgery. Bowman had surgery Feb. 2 so the second half of the season would be the right target date.
The 49ers have experience with starting a season without a key player. Receiver Michael Crabtree missed the first 11 games of the season while recovering from a torn Achilles he suffered in May. The 49ers offense badly missed Crabtree.
I think the team will handle this situation better. They are deep on defense and Bowman will not miss as much time.
Michael Wilhoite did a nice job while playing for an injured Patrick Willis for a short time last season. He will likely get the first crack at replacing Bowman, although I could see the team adding a veteran to provide options and depth while the team waits for Bowman's return.