Murrell, 25, was originally signed by the Patriots in March of 2010. After an impressive preseason, Murrell made the team's 53 man roster, recording one special teams tackle in the team's season opening win against the Cincinnati Bengals. Following the win, Murrell was released in a semi-surprising move.
Now, with the Patriots a little thin at outside linebacker with the likes of Eric Moore and Jermaine Cunningham missing practice, the Patriots have opted to bring back Murrell. I'm not sure if he'll last until next week, but for now, he adds some insurance at the position.
The Patriots did not have to make a roster move to make space for Murrell, as the return of linebacker Brandon Spikes from suspension has given the team a one week roster exemption.