The Pittsburgh Steelers have reached an agreement with first-round pick David DeCastro on a four-year deal with an option for a fifth season, according to Ed Bouchette of the Pittsburgh Post-Gazette.

The deal should have a value of around $7.8 million under the NFL's slotting system with DeCastro the 24th overall pick.

His signing leaves eight first-rounders still unsigned with camps set to open around the league this week.

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Terry McCormick covers the Titans for TitanInsider.com