The only reason Flybe may want ASW is to wipe it off the face of the earth. I am sure the competition commission would have something to to say about that though. ASW is absolutely no good to Flybe as a business, they won't want the aircraft, they won't want the crews, they won't want anything to do with Plymouth Airport.
You have to question SH's motivations for selling, £3.5m loss for an airline with 5 aircraft is a massive loss. One has to wonder what the underlying agenda is. The speculator would guess at selling it off, selling off Plymouth Airport for real estate and moving out of the airline sector.