GSM should (not for certain) be returning with at least a based a/c for S09 maybe 1 or 2 new routes supposidly there are to be many new destinations from GLA & EDI so maybe MME get a piece of cake along with ABZ.
Should they return there will be ither a 737-600 based or maybe a newer 737-700 because the main reason MME W08 schedule ends in Januray is becuase there disposing of the older 737-300's to hopefully be replaced with 737-700 & 800's.
Will have a definate answer for your question when they release the S09 programme in Aug/Sep.