Just to clarify my earlier post the different low cost carrier I referred to was Jet2 as opposed to EZY who operated the route previously.
Now to the Monarch rumour I heard the routes are not the ones shaded grey on the Monarch website as these are as previously mentioned the AVRO seat sale routes. As I understand Monarch are looking for a base from Summer 2012, routes as looked at are Teneriffe, Barcelona, Malaga, Palma and Alicante. Could the airport be looking to replace a lost EZY base in summer 2012 as I cant see both EZY and ZB operating NCL to BCN for example. However as were talking about 2012 lots of things can change.
I also believe that FR have considered, discussed and ruled out with the airport the possibility of picking up the now vacated STN route