Finn Harps goalkeeper Paddy McGarvey is one of the three Donegal contingent that have made the move to Dergview FC.
McGarvey moves on loan while Oran Brogan, from Letterkenny, joins from fellow Irish League Championship side Institute.
26-year-old Dean Curran has made the move to the Tyrone team from Aileach FC.
Manager Tommy Canning also added former Harps striker Sean McCarron to the ranks at Darragh Park.
Canning said: “I’m delighted to get the new players in. People at Dergview don’t need telling what Sean McCarron has to offer although in terms of match fitness he’s still got work to do.”
McGarvey signed a pro contract with Finn Harps in late 2020 and is signed on for the current season, so will be looking to get as much game time as possible while away from Finn Park.