According to the club's website, Lagerbäck, 77, will "assist as an adviser but also be on site on a number of occasions."
My role is a bit difficult to describe, but Per is the boss and I am one of those who will try to help him as much as I can. I don't know how much it will be, but I won't be here full time and not even close to it, says Lagerbäck - who has been an adviser to Sundsvall for some time - on the club's Instagram.
Per Joar Hansen, who has been at Sundsvall before, is set for the rest of the season. The 60-year-old worked with Lagerbäck in the Norwegian men's national team.
Gif Sundsvall is top of the Super League with nine points after 14 matches and has seven points to secure a place in the table.
