The Arizona Cardinals are signing veteran G Alex Boone to a contract on Tuesday, according to his agency.
Alex Boone has agreed to terms with the @AZCardinals Arizona Cardinals
— Schwartz & Feinsod (@schwartzfeinsod) September 5, 2017
Boone, 30, wound up signing on with the 49ers as an undrafted free agent out of Ohio State back in 2009. After seven years in San Francisco, Boone signed a four-year, $26.8 million contract that includes $10 million guaranteed with the Vikings as a free agent in March of last year.