I would bet a fair bit against any cadet type arrangement after comments made by the Chief Pilot last week.
Short of manpower mainly due to extra lines of flying bought back in-house after the failure of 3rd. party airlines.
They have already admitted that the supply of suitable candidates is limited, if (and its a big if) more than expected jump ship to the ME, you never know, a summer contract might develop into something more permanent. Its not the safest option, but at least its in the UK!