Jay Gillies, born on 2 May 2008 (age 18), is a Scottish central defender with Motherwell. He is still at the early end of his senior football life, so the sensible approach is to keep the claims modest and the facts clean.
A right-through-the-middle defender, Gillies is listed as a Motherwell player on Transfermarkt. There is no Celtic connection to dress up here, and no need to invent one.
His career, for now, is a developing Scottish one centred on Motherwell, with the next stages depending on whether he can turn youth promise and squad involvement into regular senior football.