With him set to hit unrestricted free agency tomorrow, he will be the hottest commodity with many teams trying to sign him. At a late stage in his career, he is yet to win a Stanley Cup.
Enter the Maple Leafs. They are contending for a Stanley Cup with their current core and if he gets paired with the core four, he could help push them over the top. He would be the best non core four forward the Leafs have had in years.
While he will likely command a very high salary, he may be willing to take a paycut to be closer to home and play for his childhood team. Only time will tell if Duchene prioritizes money, family, or winning and but we can expect the Leafs and Brad Treliving to do everything they can to sign him.