Blyth Spartans AFC can confirm Alex Sakellaropoulos and Priestley Griffiths have joined the club on a non-contract basis.
Sakellaropoulos, 20, joined Carlisle United from Greek outfit Panegialios before joining National League North rivals Gateshead last summer.
Griffiths, 24 and a former England U17s international, came through the youth ranks at Middlesbrough.
Since leaving the Teesside club in 2015, Griffiths has spent time at Spennymoor Town, Bishop Auckland, IBV Vestmannaeyjar and Marske United.
Michael Nelson, manager of Blyth Spartans explained: “We need to add some depth to the squad so Alex and Priestly have come in on a non contract.
“We’re pretty light in the defensive area at the minute, so Alex, a defender, has come in to cover.
“I knew him at Gateshead and he has developed since then, so hopefully he’ll continue to develop over the course of the season.
“Priestly came in on trial but with us going into isolation, he hadn’t had a great deal of playing time.
“He’s a central midfielder, good on the ball and can also cover right-back and centre-back as well, so he adds a bit of versatility to the squad.
“Hopefully he can do well and challenge for a place in the team.”