The duo's existing deals expired yesterdayBCFC
The duo's existing deals expired yesterday.
McGilp joined Blues last August following a successful trial, after leaving Australian A-League side Melbourne Victory.
The 20-year-old, who grew up in Australia but was born in Glasgow, has featured regularly for Blues Under-23s, racking up 17 appearances and scoring two goals.
German stopper Luyambula has featured 12 time for Blues Under-23s since joining the Club in August 2018.
The 19-year-old was a product of Borussia Dortmund's Academy and was with the German giants for almost 10 years before electing to move over to England.
As well as playing for Blues, he is also currently on loan at non-league side Hungerford Town in order to gain valuable experience.
Striker Francis Amartey also joined Blues on a short-term deal in August but it is not being extended.