Watford have registered their interest in signing Leeds United defender Barry Douglas, Football Insider can exclusively reveal.

The future of the Scotland international, 31, is in major doubt with eight months remaining on his Elland Road contract.

A Watford source has told Football Insider that the club are preparing a late-window move for Douglas as they look to recruit a new left-back.

The former Wolves man has failed to make the Leeds matchday squad for their three Premier League fixtures this season.

His only involvement came in the EFL Cup defeat to Hull City when Marcelo Bielsa fielded a weakened team.

Stuart Dallas has emerged as the first choice left-back in the past two seasons, understudied by Ezgjan Alioski.

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Even youngster Leif Davis appears to be ahead of Douglas in the pecking order after being named on the bench ahead of the Scot for last weekend’s 1-0 win over Sheffield United.

It remains to be seen whether Watford will look to sign the Leeds man on loan or a permanent deal.

He was expected to be a transformative signing when prised from Molineux for £3million in the summer of 2018 after his key role in their promotion campaign.

But the experienced campaigner has failed to hit anywhere near the same heights at Elland Road.

He has been hit by injury and mixed form and is well down the pecking order as Bielsa prefers attack-minded converted wingers in the position.

Douglas’ stop-start United career has seen him accumulate just 44 appearances in all competitions in three season.

In other news, Football Insider can exclusively REVEAL Leeds United are reigniting a collapsed pursuit with a new £25m move.