Mark Hughes is unaware of any approach being made for Peter Crouch over the summer, with QPR admitting to being keen.
Bolton Wanderers have signed goalkeeper Paddy Kenny on a short-term contract following his release by Leeds United.
Doyley's previous deal was due to expire this summer, but Sky Sports understands terms have been agreed on a new contract to keep the defender at Vicarage Road.
The versatile stopper made 38 appearances last season as the Hornets reached the play-off final, only to lose to Crystal Palace.
Watford boss Gianfranco Zola is keen to keep hold of Doyley and has offered the Jamaica international a one-year contract extension.
The 30-year-old has come through the youth ranks at Watford and has made over 400 appearances for the Hornets.