Joely stands a good chance. No really sure about Cron. Best hitter of the candidates, but lest versatile defensively. Assuming Refsnyder and Grissom start the year on the IL, and Valdez (2b starter?), McGuire and Reyes are locks, that leaves Cron, Dalbec, Gonzalez, and Hamilton for the last two spots.
Cron is the only one with no options remaining. That might give him the inside track...