In Antwerp Flybe is mentioned as the prime candidate to take over the route.
Flybe and Stobart are two different airlines and certainly with the rumours that Stobart will no longer operate as Flybe from next summer.
Personally I expect Eastern Airways as Flybe to start operating this route with the Saab 2000. They should have a Saab and trained LCY crews available since their contract with BA for the IOM route just fininshed.