Date of birth
Republic of Ireland
Signing until the summer of 2019, Shaun Donnellan signed on a free transfer from Premier League outfit West Bromwich Albion in January 2018.
Town's seventh and final acquisition of the window, the Republic of Ireland Under-21 international bolsters Darren Way's defensive options.
Having spent the first half of the 2017/18 season on loan in Sky Bet League One with Walsall, Donnellan jumped at the chance to join the Glovers.
Barnet-born Donnellan is the son of former Fulham and Republic of Ireland youth international Leo whilst his uncle, Gary, featured for Town in the late 1980s.
Operating primarily at centre-back, the 21-year-old will wear the number 27 shirt at Huish Park.