Jarnkrok (undisclosed) took part in practice Saturday, per NHL.com's Dave McCarthy.
In his return to the ice, Jarnkrok skated alongside William Nylander (illness) and Max Domi. While the 32-year-old Jarnkrok won't play in Toronto's preseason matchup with the Canadiens on Saturday, he could be ready to go by Opening Night. He is projected to occupy a middle-six role in 2023-24.