Marcus plays for Arsenal and has made excellent progress in the past 12 months.
He was called into the Ireland squad for the first time ahead of the UEFA U17 Championships finals in Bulgaria and played in all three games.
He combined his football with studying for his GSCEs at the same time.
Marcus' grandparents are from Portlaoise and Cork but most of his Irish family now lives in Limerick. He made his U17 debut against Netherlands