Zumaya, who tore his UCL during a live batting practice session on Saturday, is weighing whether to have the surgery and attempt another comeback, or retire at the age of 27.
"I have not heard from Joel Zumaya and I don't know if that will be in the next day or two or in a week," Ryan said. "I don't know if his agent will call us or if he'll call me and give us his decision. But I'm still waiting."
Ryan said he still has until the end of Spring Training to decide whether to cut Zumaya or place him on the 60-day disabled list.
"That isn't an issue right now," Ryan said.