I would think a new charter carrier would be highly likely as rumour elsewhere suggests that BMI won't have an aircraft spare next summer to continue the LBA charters.
As for a new lo-co:
I wonder whether any lo-co would want to come & play next summer with the airport probably about to turn into a building site!
The new owners have stated they want new routes & new airlines and they have already got new routes from Jet2 & Ryanair. Maybe someone new will dip their toe in the LBA water next summer but I would reckon summer 09 is more likely.