Quoting: Ledge_And_Dairy
Lol try again. Lindholm would be extremely coveted league wide if made available. He has no trade protection and is on an extremely team friendly deal. His next contract is irrelevant in talks concerning his trade value, even as purely a rental he has loads of value. Bo Horvat was traded as purely a rental and he got a better return than what you are suggesting. Bo Horvat is not nearly as good as Lindholm
I mean, nobody is going to give you a FRP plus 2 good prospects for a one year rental of Lindholm, they would absolutely be thinking about his extension.
Bo Horvat got traded for a FRP, an iffy prospect and a roster player (which was also about making the $$ work, not just adding value for VAN). He also signed an extension with the NYI like a week later, so he absolutely wasn't a rental.
The Pierre-Luc Dubois trade also set the market for Lindholm. PLD is a younger, arguably better player than Lindholm and he got the Jets a 2nd, a good prospect, a low-end prospect, and a roster player. A FRP, a good prospect, and probably a roster guy or a 3rd is a more than fair return for Lindholm.
Calgary's best chance to get more is to send him to someone desperate to continue to compete in the short term (think Boston, Pittsburgh) because maybe they would actually use him as a rental and like I said, they're desperate, or maybe they wouldn't care about the long term of his contract as much. Maybe you'd get more out of them, but they don't have as much capital to trade away in the first place.