Derrick Henry is wearing No. 2 for the Tennessee Titans currently, but he's waiting on No. 24.
NFL rules don't allow running backs to wear a single number, they must wear something between 20-49.
Titans cornerback Perrish Cox wears No. 24. He switched to it after striking a deal with DeMarco Murray, who wanted to wear No. 29 after he was traded to the Titans from the Philadelphia Eagles.
Cox has indicated he'd be willing to change again.
"We're just trying to wait and see what numbers come available," Henry said. "If a number comes available that he wants, then we'll try to work something out.
"We're still not sure yet, we just have to wait. I'm anxious too to find our what number I will wear."