no, I totally understand. Let me put it this easy, you have a first line forward paid under market value and therefore has a ton of value in a trade. Everyone totally agrees that it is an amazing contract. But then you decided to eat Half the cap space in that player in a trade on the request of the team trading for him. Does that team offer you value to retain ? Is that value measurable? Is it a semi constant market value that is predictable?
you totallly don't understand.
i am not arguing, that retention adds value in a trade. definitely the offer increases after retention. but the added value is not based on the amount retained. the offer increases for the contract with lesser cap hit and less salary amount after the retention. the retained money was used to lower the contract number. but the amount retained has no fix value for the buying party. it is just the tool to increase the value of the remaining contract.
here a theoretical example to illustrate my thoughts:
assume player A with a 6 million contract, who performs like a 6 million player. let's say he is worth a first round pick.
now we retain 2 million to make him a 4 million contract. his assumed value is now two first round picks.
so the added value for retaining 2 million seems to be a first round pick in this example.
assume now player B with an 8 million contract, who performs like a 6 million player. his theoretical worth is a second round pick.
now we retain 2 million to make him a 6 million contract with the ability of a 6 million player. so his worth went up from a second round pick to a first round pick.
the two million retention is in this case worth less than a first round pick.
assume now player C with a 4 million contract, who performs like a 6 million player and has a market value of 2 first round pick like player A after retention.
the buying party looks at the player and his contract (after retention, if there was one) and offers the market value (or a little bit more with competition), it sets for such an asset. whether the seller retained money on the contract is not of interest for the buying party. they wouldn't offer more for player B (after retention) than player A (before retention). the value is a first round pick, regardless if the seller retained money. same for player A (after retention) and player C.
the selling party, tough consider the value of their player before retention and retained amount, which remains on their cap and payroll and weighs it against the offer.