QPR are considering a bid for Aston Villa defender Ron Vlaar should they fail to sign Steven Caulker from Cardiff. Roma are also keen on Vlaar while Villa want to offer him a new contract. Dutchman: Ron Vlaar was one of Holland's standout players at the World Cup . Heading off: Cardiff City has accepted a bid from QPR Steven Caulker (right), says Harry Redknapp . QPR are discussing terms with Ajax striker Kolbein Sigthorsson and have interest in Watford's Troy Deeney. Midfielder Samba Diakite is close to joining Saudi Arabian club Al-Ittihad on loan. Wanted: QPR are also interested in Watford striker Troy Deeney . VIDEO QPR close in on centre backs .
QPR considering move for Vlaar if they fail to sign Steven Caulker . Caulker is expected to choose Crystal Palace ahead of QPR . Roma are also interested in signing Vlaar from Aston Villa .