Age: 20 years, 7 months
Place of Birth: Loughanure, Co Donegal
Marc played underage football with Gweedore Celtic before joining Finn Harps' U17 side in July of 2016. He spent a year with Harps and in July of 2017 he secured a move to then Premier League side Swansea City.
He made his first appearance for Ireland at U17 level in a 6-0 win over Azerbaijan in October of 2017.
In February 2021, Marc signed for Derry City.