Not exhaustive, but here’s a list of notable trades involving U30 defensemen this decade:
Player | Team Control | Traded For |
McDonagh | ~1.25 | Quantity |
Hamonic | 3 | Quantity |
Sergachev | 7(+) | Quality |
Subban | 6 | Quality |
Larsson | 5 | Quality |
Jones | ~4.5(+) | Quality |
Hamilton | 4(+) | Quantity |
Yandle | ~1.5 | Quantity |
Myers | ~4.25 | Quality |
Leddy | 1(+) | Quantity |
Bouwmeester | ~1.25 | Quantity |
J. Johnson | ~6.25 | Quality |
Burns | 1 | Quantity |
E. Johnson | ~1.5(+) | Quality |
Phaneuf I | ~4.5 | Quantity |
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(+) indicates players of RFA age.
The common theme I see is that defenders will generally go for relative quantity when (1) said player is within 18 months of free agency or (2) said player is the casualty of a cap strapped team. There are a couple that deviate from that narrative, namely Hamonic, Hamilton and Phaneuf I. They’re pretty spread out, so I’m not sure you can expect for that type of trade to be available when your team needs it.