Last month, San Francisco 49ers general manager Trent Baalke said the team could look at some veteran inside linebackers as star NaVorro Bowman recovers from a torn ACL in his knee. Bowman could be out for half the season.

The 49ers have yet to add any veteran help, but they have been looking. The team showed interest in free agent Brandon Spikes before he signed with Buffalo. Spikes’ price tag was too big for the 49ers, who are simply looking for some depth and a veteran option in case they must turn to one. The 49ers like Michael Wilhoite, who spelled inside linebacker Patrick Willis successfully for a short period last season, and second-year player Nick Moody. CSN Bay Area reported this week that the 49ers are still exploring the veteran market.

Perhaps one reason why the 49ers haven’t signed anyone is that there are not a lot of great options.

Here are some names that could potentially interest the 49ers: Desmond Bishop, Dan Connor, Jonathan Vilma, Paris Lenon, Larry Grant, Nick Barnett, Bryan Kehl and Larry Foote. Bishop and Kehl are coming off torn ACLs themselves, and players like Vilma, Barnett and Foote are at the end of their careers.

The bright side for the 49ers is they don’t need much from any addition. They are just looking for depth options.