Butler announced his retirement again from the NFL on Sunday, Aaron Wilson of KPRC 2 Houston reports.
The Dolphins worked out Butler on Tuesday, Field Yates of ESPN reports.
The Patriots released Butler (undisclosed) from injured reserve with an injury settlement Thursday, Doug Kyed of Pro Football Focus reports.
Butler (undisclosed) was placed on injured reserve Tuesday, Field Yates of ESPN reports.
Butler has agreed to a two-year deal with the Patriots, Adam Schefter of ESPN reports.
Butler was waived off the reserve/retired list by the Cardinals on Thursday, Marcel Louis-Jacques of ESPN.com reports.
The Cardinals placed Butler on the reserve/retired list Tuesday, Field Yates of ESPN reports.
Butler is considering retirement as he deals with a personal matter, Mike Garafolo of NFL Network reports.
Butler is signing a one-year contract with the Cardinals, Ian Rapoport of NFL Network reports.
The Titans released Butler on Tuesday, Jeremy Fowler of ESPN.com reports.