Both players will start on the bench but could make their first-team debuts under manager Ruud van Nistelrooy.

Monga and Evans have been standout performers for Leicester's Under-21 side this season, impressing with their skill and maturity beyond their years.

Van Nistelrooy had initially planned to promote them next season but has opted to accelerate their integration into the senior team due to their outstanding form.

If Monga makes an appearance, he will not break Leicester's record for the youngest-ever player.

That honour remains with Ashley Chambers, who debuted at 15 years and 203 days - just over a week younger than Monga.

"The FA Cup is also fantastic to add young players into my squad, a 15-year-old and a 16-year-old," van Nistelrooy said at his press conference.

"They're going to be part of the squad, on the bench, tomorrow.

"It's an occasion where these things can happen, opportunities for players. They have names! The 15-year-old is Jeremy Monga and the 16-year-old is Jakes Evans.

"The moment I came, coming from the Netherlands, it's a country where you develop players and they sign for teams in the bigger leagues. In my time in PSV, it was great to be part of the development of Cody Gakpo, Noni Madueke, Xavi Simons, Jarrod Branthwaite, Johan Bakayoko, Ismael Saibari, it's fantastic as a manager, working with these lads.

"You're teaching them the trade of what it's like to be a professional, what the lifestyle is about, what is the approach, what is the mindset. Then you talk about things on the pitch, develop them as players and as human beings.

"It's the same here. The first thing I did was look at the Under-21s, the Under-18s, join them in for regular first-team training and get an idea of them. It's not only looking outside to strengthen.

"There's a great academy here and I look inside to strengthen. When players are good enough, the age doesn't matter to me, and they can help the squad and the team."

Leicester youngsters Monga and Evans named in FA Cup squad against Man Utd