Finn Harps' boss Ollie Horgan is continuing to build his squad ahead of the new season.
Killian Cantwell is the latest new signing at the Ballybofey club.
The defender has been brought in as defensive cover to replace Keith Cowan who is expected to miss the entire season due to a knee injury.
“We’re very pleased to get a central defender of Killian’s stature on board for the new season. He’s a young lad who has a lot of experience already in League of Ireland football having played with Wexford Youths and the last two years with Galway United in the Premier” Horgan said.
The 21 year old has spent the last two seasons with Galway United, having previously lined out for Wexford Youths.
Despite suffering from injuries, he made nine league appearances for the club as the Tribesmen finished tenth in the Premier Division. The central defender also played in the 2015 EA Sports Cup Final, which Galway lost on penalties to Saint Pat’s.