I guess if we sign Burmi, then trade him quickly after, it replicates a sign and trade. In the NBA it happens when an UFA does not want to return to their previous team, but wants the max years and dollars on their next contract, which their current team can only ink. It also allows the current team to get value from the asset.
It also works when a team wants a pending UFA but does not have the cap space to sign them out right. If the other team obliges, they can ink the contract, then trade him to the team that wanted him, and receive a contract of equal or greater value, if they have cap space to absorb.
Not sure if this flies in the NHL. Are there trade exceptions in the NHL, where one team can send a higher contract back, and receive the difference of value in a trade exception?