Let's put an end to this once and for all:
quote from brookfield FAQ:
As a First Officer how many flying hours do I need in order to be considered for an upgrade to Captain?
You will need a minimum of 3000 hours JAR-25 (737) time and also you will need to have been operating for Ryanair during one complete winter season. The minimum time for a newly recruited experienced First Officer to be entered into the command upgrade programme would be 7 months.