Here are five facts about him...
1) Guthrie is 25 and made 13 starts in the Premier League last season, scoring one goal.
2) The midfielder began his career in the Manchester United youth academy but signed his first ever contract with rivals Liverpool, where he made three first team appearances.
3) He spent a season on loan with Bolton Wanderers, and started in the Allianz Arena in Gary Megson's side's memorable 2-2 draw with German giants Bayern Munich.
4) He became a hate figure at Hull City after breaking Carl Fagan's leg in a needless 90th minute challenge, with the game already lost, while playing for Newcastle and was sent off for his actions.
5) His recent wedding made national news when trouble at the £40,000 caused the police to be called out twice after an alleged 'mass brawl'.
Watch Guthrie in action...
Is Guthrie a good signing for Reading?
image: © mikebrown59