Both players struggled to hold down a regular first-team place towards the end of last season and could be tempted to move on in search of regular action.
Villa are believed to be ready to test the water with a £15million offer for the pair, with Spurs likely to move some players on this summer in order to bolster Harry Redknapp's transfer kitty.
Villa will face competition for the signature of Jenas, with Stoke City also understood to be mulling over an offer for the former Newcastle and Nottingham Forest man.
Meanwhile, Martin O'Neill could end Bentley's up-and-down two-year spell at White Hart Lane. The former Arsenal man made just 11 starts last season, with four appearances from the bench.