LTIR doesn't really matter in this situation. It's basically just who pays Seabrook's money.
Per RawCharge:
"Using CapFriendly.com and their current Lightning roster, prior to moving Tyler Johnson, the Lightning had roughly $750,000 in cap space. If the Lightning had just moved Tyler Johnson, they would have $5,750,000 in cap space to add to the roster. With Seabrook, the Lightning are $1,120,122 over the cap. With Seabrook, the Lightning can add up to $5,750,000 in cap hits to the books without going over the cap. The mechanics of the situation are a little different because of using LTIR, but the end result is almost the same. The Lightning will have to do some Opening Night juggling to make the most of LTIR, but they can do that."
Per RawCharge:
"Using CapFriendly.com and their current Lightning roster, prior to moving Tyler Johnson, the Lightning had roughly $750,000 in cap space. If the Lightning had just moved Tyler Johnson, they would have $5,750,000 in cap space to add to the roster. With Seabrook, the Lightning are $1,120,122 over the cap. With Seabrook, the Lightning can add up to $5,750,000 in cap hits to the books without going over the cap. The mechanics of the situation are a little different because of using LTIR, but the end result is almost the same. The Lightning will have to do some Opening Night juggling to make the most of LTIR, but they can do that."