Could be true. However, i feel all the young players at VIlla (Milner, Gabby, Young) all want to get Villa as far as possible, and when they feel they have given all they will be off. They haven't got Villa as far as possible, so none of them, IMO, will leave.
If the reports are true about Bentley, MoN is being clever for once and bringing in a player that will keep players like Milner, Young and Downing (basically the attacking force in our team) on their toes. Bentley is far more of threat to those players than Sidwell.