Kevin Garnett, Paul Pierce and Jason Terry heading to the Nets.

Kevin Garnett has agreed to waive his no-trade clause, clinching an agreement on a trade that will land Paul Pierce, Garnett and Jason Terry with the Brooklyn Nets, sources close to the process told ESPN The Magazine's Chris Broussard on Thursday night.

Garnett waiving the no-trade clause was the last step to sealing the deal, sources said.

No trade between the teams can officially be consummated until July 10 -- when a league-wide moratorium on signings and trades is lifted after free agency begins July 1 -- but the teams made fast progress on finalizing the trade parameters.

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