Leeds are lining up a move for Watford midfielder John Eustace, skysports.com understands.
Eustace's future at Watford is uncertain with the 29-year-old ending last season on loan at Derby.
The former Stoke man has not played for Watford since last December and it remains to be seen if he part of Malky Mackay's plans for the new season.
Leeds boss Simon Grayson is believed to be a big admirer of Eustace and is keeping tabs on his situation.
Grayson is thought to be in the market for midfield reinforcements and he could step up his interest in Eustace if Leeds lose in-demand star Fabian Delph in the coming weeks.