32-year-old, Shrewsbury-born Guthrie, who has made almost three-hundred career appearances, is currently a free agent after leaving Indonesian Liga club, Mitra Kukar earlier in the summer.
Guthrie, a product of the Manchester United and Liverpool youth academies, began his professional career with the Reds in 2005, making a handful of appearances whilst also enjoying loan spells with Southampton and Bolton Wanderers.
Danny joined Kevin Keegan's Newcastle United in the summer of 2008 and went on to make over one-hundred first-team appearances for the Magpies over the next four seasons.
Danny was released by Newcastle in June 2012 and went on to join Reading later that summer. He would make just shy of seventy first-team appearances for the Royals, also enjoying a loan spell with Fulham before leaving for pastures new once again.
He was soon back in work and signed a two-year deal with Blackburn Rovers - following a successful trial spell - and would make just over forty appearances before leaving the club at the end of the 2016/17 campaign.
After opting to try his hand at football overseas Danny inked a deal with Mitra Kukar in January 2018 but has been out of work since that deal came to an end.
It is not known whether the Saddlers are keen to add Danny to the squad or if he is simply boosting his fitness, but given our lack of experience he could be a shrewd signing.