Matt Maiocco reports that the 49ers have extended and may be in hot pursuit of Cardinals free agent Calvin Pace as well as the previously mentioned Justin Smith.

Green might very well have the best pass-rush ability of anyone on the current roster and has always produced in limited playing time. Pace, who has experience at 4-3 DE, OLB and 3-4 OLB, could be a fine replacement in the starting lineup for the relatively mediocre and the team is supposedly willing to throw at least $14 million guaranteed at Pace.