Holm has played in 10 league matches this season for Valerenga with their campaign starting in April.
If the deal goes through as reported he’ll have just over one week to prepare for pre-season training with Celtic although he will be a step or two ahead of his new team-mates.
The 20-year-old appears able to play in any midfield role but Celtic are already well covered in that area of the park with David Turnbull, Tomoki Iwata and Aaron Mooy all struggling to start matches in their preferred positions.
CLICK HERE for Holm’s Soccerway profile.