... roster Wednesday, signing wide receiver Ryan Grice-Mullen and defensive end/linebacker Brian Johnston to future contracts.

An undrafted receiver out of Hawaii in 2008, Grice-Mullen had brief offseason stints with the Houston Texans and Chicago Bears, and has played the past two years with the BC Lions of the Canadian Football League.

A college teammate of current Dolphins receiver Davone Bess, Grice-Mullen is the second BC Lions player to be signed by the Dolphins this offseason, joining fullback Rolly Lumbala .

A seventh-round pick by the Kansas City Chiefs out of Gardner-Webb in 2007, Johnston played one season with the Chiefs and...

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