The top NFL free agent is off the market.

Former New Orleans Saints offensive tackle Terron Armstead is signing a five-year, $75 million deal, plus incentives, with the Miami Dolphins, NFL Network Insider Ian Rapoport and NFL Network's Tom Pelissero reported.

Ranked atop the NFL's 101 free agents list, Armstead immediately bolsters the ?Tua Tagovailoa? -quarterbacked Dolphins offense.

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When he's on the field, Armstead is one of the finest left tackles in the NFL. Heading into his age-31 season, Armstead should have plenty of good-to-great campaigns ahead of him to anchor a Miami offensive line that has been a weakness for the club in recent years.

Armstead's major red flag is that he missed nine games last season and at least six games in four of the past six years.