NaVorro Bowman is just a little bit fired up for 2015

Over the last few days, NaVorro Bowman has been tweeting out some messages, and he sounds pretty fired up for the San Francisco 49ers upcoming season.

Watching the games this weekend got me itchin to hit that field again! #MON5T3R pic.twitter.com/K1cCDvpuoL

— Navorro Bowman (@NBowman53) January 20, 2015

Trust when I say we will be doing big things this year.. You ready @PatrickWillis52? #MON5T3R pic.twitter.com/2Lxr9HNpji

— Navorro Bowman (@NBowman53) January 21, 2015

He still has to get back on the field after missing the entire 2014 season, but if he and Patrick Willis can return to full health, that would be a sizable boost for the new defensive coaching staff. We still don't know the status of Justin Smith, although I imagine we'll find out shortly in the week or two after the Super Bowl. And of course, there will be turnover in the secondary with Chris Culliver and Perrish Cox due to hit free agency. That being said, getting Bowman and Willis back in the lineup would be huge.