The 17 year-old centre-half has caught the eye of United scouts for Livi's reserve-team.
"Coll was watched by Man United in a couple of reserve games and Martin Ferguson (chief scout) wondered if they could have a look at him," said Livingston chief executive Ged Nixon.
"They're looking after him and he'll train with them before they decide what they want to do.
"It's a fantastic opportunity for the boy. No matter what happens in the end, it will let him see what's out there and he'll train in fantastic surroundings at Carrington."