The Miami Dolphins added another player to their offseason roster Thursday, signing nose tackle Charles Tuaau to a Reserve/Future contract, according to the NFL's transaction list.

Players who weren't on active rosters at the end of the regular season are eligible to be signed to futures contracts, which are basically early invitations to OTAs and training camp. Teams can sign as many players as they want to such deals, as long as they remain under the 90-man offseason roster limit.

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Before Thursday, Tuaau wasn't with an NFL team at all. He originally signed with the Chiefs last May but was cut towards the end of training camp as Kansas City trimmed its roster down to 53 players. With the Chiefs, the 6-foot-5, 310-pound Tuaau worked on both the defensive and offensive lines before his release.

Tuaau did not sign on with a team's active roster or practice squad all season but will give his NFL career another chance this offseason with the Dolphins.

Before going undrafted, Tuaau played his college ball at Texas A&M Commerce, where he recorded 34.5 tackles for loss and 17 sacks in two seasons.