For all tenders, the original team retains right of first refusal to match the offer or receives various levels of compensation (selections in this year's NFL draft). Here is the tender amount and compensation required this offseason:
$927,000 (minimum tender)
Compensation: Round drafted (or simply right of first refusal if player was undrafted).
Compensation: Second Round pick
Compensation: First Round Pick
Compensation: First and Third Round Pick
It's likely the Dolphins will tender both players as the lowest amount, which would give them only the right of first refusal. Lekkerkerker and Denney both entered the NFL as undrafted rookie free agents, therefore the Dolphins would get no compensation under this scenario if either signed as an offer sheet with another team and Miami declined to match the offer.
Lekkerkerker is a backup, while Denney's position is not one that commands a high salary, even though he's done a very good job at it in his three seasons in MIami.
If a player does not receive an offer sheet from his original team, he becomes an unrestricted free agent.
In 2007, the first and third round tender was $2.35 million. The first round tender was $1.85 million; second round tender $1.3 million; and low tender, $850,000.
The Dolphins lost two restricted free agents last offseason. First, after New England began pursuing Wes Welker, the Patriots and Dolphins simply worked out a trade that gave MIami second- and seventh-round picks instead of only the second-round choice the Dolphins would have gotten based on their $1.3 million tender. The Dolphins also declined to match St. Louis' offer sheet to punter Donnie Jones, and got a seventh-round pick as compensation.