With veteran Ronnie Brown and Ricky Williams unsigned, the Miami Dolphins addressed the running back situation by selecting Daniel Thomas in the second round of this year’s NFL Draft.

But even with Thomas in the fold, depth at the position remains an issue. So does speed.

“I’m interested in having another back, whether it fits the description of a scatback or not, we’ll have to see what’s available. You can’t corner yourself into just a scatback,” general manager Jeff Ireland told the Sun-Sentinel. “We need another complementary back who complements Daniel [Thomas] and Lex [Hilliard]. We do have somewhat of a scatback in Kory Sheets that we haven’t seen yet, so I’m still hoping he can develop.”

Sheets, who was signed off the San Francisco 49ers practice squad two years ago, missed all of last season due to a torn Achilles’ tendon. Sheets, who has good speed, could fit the change of pace or scatback role.