Last year Ryanair said in the local press that they had plans to link Bournemouth to 'an Italian destination in the near future.' This has yet to happen, but they may consider Gerona on the Costa Brava after witnessing the scramble for seats on the proposed Buzz services to Malaga and Murcia.
They also said on local TV, when they cancelled the Buzz base, that they had 'no plans this summer to base any aircraft at Bournemouth.' This obviously leaves the door open for a 737 or two at Bournemouth sometime in the future.
I can't see that Flybe at Southampton would be considered real competition whilst they use 50 seater props. Compared to 189 seater 737's. Ryanair say they sell the first 70% of their seats at the two cheapest prices. Thats 132 seats per flight. Plus they can afford to hold a price war until they see off the competition. BA's Frankfurt-Main service from Southampton didn't last long after Hahn started from Bournemouth.