Reports Monday have confirmed what 49ers fans (and hopefully NFL fans in general) had feared the most - Bowman has been diagnosed with a torn ACL and MCL, according to Pro Football Talk.
The injury comes at an unfortunate time, as Bowman had turned into arguably the best linebacker in the NFL during the 2013 season. He excels in every facet of the game, dominating against the run, locking down receivers in pass coverage, and rushing the quarterback extremely well for an inside linebacker. Among 55 qualifying inside linebackers, Pro Football Focus graded Bowman as the best player at his position by a significant margin - yes, even better than teammate Patrick Willis, who finished with the second highest grade on the year.
Bowman is now in a tough spot, as he'll be in a race against time to be ready for Week 1. Any serious knee injury late in the season will cloud a player's outlook for the following campaign, and Bowman's injury came close to as late in the season as possible. It is extremely difficult to predict a timetable for Bowman at this point in time, but it is worth noting that ESPN's Adam Schefter has reported that Bowman is expected to be ready for the season opener. Don't get your hopes up too much, though, because that could very well change as the rehab process progresses.
Bowman is just 25 years old, so he still has an incredibly bright future ahead of him.
Here's a link to video. Once again, it may be a bit off-putting for those who are squeamish: