Ottawa was offered Duchene in the past, has the cap space, have the depth to offer up good pieces. But they might not have the money.
Tampa would have a big need for Duchene if they lose Stamkos, they would have the cap space, they have players with a good amount of playoff experience, and they have a good prospect pool - including Drouin. But all this depends on Tampa losing Stamkos
Toronto have the need for Duchene, have the cap space, and have lots of futures to offer. But they might not have the right roster pieces for a trade and Duchene might be a bit older than players they might be trying to target.
Islanders have a need for Duchene, have the cap space, they can offer up a young, establish, cost controlled top-4 defenseman(Hamonic). But they might prefer getting a defenseman in return.
Philly have been bold, aggressive, and impatient in the past. Hextall is a borderline crazy. They have a very deep group of young talented defenseman. But they might not have the cap flexibility.