Source: Team_Talk
Grecians boss adds two to squad
Defender Duffy, capped 13 times by Wales, arrives on a free transfer having been released by Millwall this summer while former Arsenal midfielder Dunne has penned a deal after impressing on trial during pre-season.
Meanwhile, playmaker Ryan Harley has signed an extension to his contract at St James Park.
Harley has made 42 appearances and scored five goals since joining the Grecians in November 2007.
