The Vancouver Whitecaps have signed reigning MLS Defender of the Year Tristan Blackmon to a contract extension through the 2029-30 season, sources tell ESPN.

The deal concludes a drawn out negotiation that saw Inter Miami make a play for the United States international, with Vancouver ultimately rejecting a cash transfer offer of $3 million. Later Blackmon didn't turn up for a scheduled medical to start training camp, according to sources.

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Blackmon ended up completing the medical the next day and continued to train with the Whitecaps throughout preseason.

Tristan Blackmon played in the Vancouver Whitecaps' opening game of the 2026 MLS season against Real Salt Lake. Simon Fearn-Imagn Images

He went the full 90 minutes in each of Vancouver's first two competitive fixtures this season, a 0-0 draw against Costa Rican side Cartaginés in the Concacaf Champions Cup, and a 1-0 win over Real Salt Lake in the MLS season opener last weekend.

Sources added that Blackmon, who had two years to run on his original deal, ultimately signed a contract that contains a sizable raise, but not as much as Miami was offering.

For Vancouver, the deal allows the club to...