As veteran free agency rapidly approaches in the NFL, Don Muhlbach of the Lions has signed a one-year deal to return to Detroit.  With Muhlbach’s signing, there are just three unrestricted free agent snappers remaining.  Pat Mannelly of the Bears is expected to return to Chicago and Greg Warren (Steelers) and Andrew Economos (Buccaneers) are set to become free agents on March 11th if not re-signed by their clubs.