Olympic Airlines are a good bet. They already operate Dash 8 100s so are maybe looking at expanding out to the Dash Q400.
My guess is, if as Jethro's listings are correct Flybe maybe looking to sell a couple of Q400s. A deal could be done whereby these Q400s could be bought by Olympic, the pilots could be trained inhouse down at Exeter during this time Flybe pilots could operate the schedule. Olympic may buy a couple of new Q400s from Flybe thus reducing the number of backed up aircraft Flybe have.
Flybe makes money by utilising and selling aircraft, training pilots and providing contract pilots win win win situation.
Roller