Watford have reportedly contacted Sunderland over signing out-of-favour forward Danny Graham this summer.
The 28-year-old has spent loan stints at Hull City and Middlesbrough after signing for the Black Cats from Swansea City last year.
According to The Chronicle, Watford have made a formal enquiry for the player, who is said to be open to returning to Vicarage Road following a failed stint at Sunderland.
Graham scored 41 goals in 98 appearances during a two-year spell with the Hornets from 2009.