I wouldn't say the Rox really need young arms...
Francis (25), Jennings (28), Cook (27), Fuentes (31) aren't exactly old. But yes, every team could always use more good young arms.
Jeff Baker I think also came up as a 3B and is supposed to be better than Stewart, but it looks like they've moved him to the OF.
All things considered, I think they'll keep Atkins for the foreseeable future.