De Hann is still a good 2nd pair LD and this pick is late. Islanders can afford to make this move.

Since the islanders are already using off-season LTIR, Shaw can allow them to exceed the cap by his cap hit.

If you are confused about why Shaw allows the islanders to get De Hann without sending cap back then ask in the comments but the short explanation is

Islanders are using off-season LTIR with Boychuck (6 mil) they have about 2 mil of that space left unused.

They can acquire and put Shaw on LTIR (Boychuck 6 AAV + Shaw’s 3.9 = 9.9 AAV)

Acquiring De Hann would only cost them 650k on their existing relief pool. That cap space goes away at the seasons start.

Purely hypothetical, but see my recent post about how KK being offersheeted make me believe that is a comparable for a Strome deal.

Extension

Comparable to the Seth Jones deal.