Leeds United have turned their attention to Celtic striker Leigh Griffiths as their search for a new front man takes yet another twist, Football Insider can reveal.

The Championship giants have hit a series of stumbling blocks in a bid to land a new forward before the transfer cut-off on 31 January.

A Leeds source has told Football Insider that the club have added Griffiths’ name to their shortlist of striker targets for the final 10 days of the window.

The Scotland international has lost his regular starting place at Parkhead after well-documented fitness and off-the-pitch issues in the last two seasons.

Odsonne Edouard is the first-choice striker at Celtic and Neil Lennon completed the signing last week of Polish forward Patryk Klimala for £3.5million.

That has thrown Griffiths’ future at the club where he has spent most of his career into fresh doubt.

The 29-year-old has a contract that runs until the summer of 2022 but may soon be the third-choice spearhead at the Scottish champions.

Griffiths started and scored in last weekend’s 2-1 Scottish Cup win against Partick Thistle but he has only begun two league matches all season.

Nevertheless, he has an outstanding scoring record for Celtic, with 222 appearances for the club yielding 108 goals and 46 assists.

He has also been prolific at former clubs Wolves, Dundee, Hibernian and Livingston.

Leeds boss Marcelo Bielsa has made it publicly and privately clear he wants a new striker before the window shuts.

In other Leeds United news, it can be REVEALED that the club are holding talks with a young centre-forward as offer readied.