Leeds United have slapped a £500,000 price tag on defender Lewie Coyle as talks to sell him this month intensify, Football Insider has learned.

The defender, 24, has been on loan at Fleetwood Town on a deal that has now officially expired and his contract at Elland Road ends in June.

A Leeds source has told Football Insider that the club are working on a deal to permanently sell Coyle this month amid growing interest from Football League teams.

Football Insider revealed last month that Blackpool had made their move for Coyle, while there have also been talks with Fleetwood over converting his loan into a permanent move.

Sunderland have become the third League One side to be linked with the United academy product.

Marcelo Bielsa has made it clear that the versatile full-back does not fit into his plans for the second half of this season or beyond that.

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Football Insider revealed in November that United are ready to permanently sell Coyle in this window rather than let him leave for nothing at the end of the season.

Coyle is on a half-season loan at Fleetwood after also spending the entirety of the two previous campaigns at the north-west outfit.

Intriguingly, he has started the Lancashire club’s last two matches, including Saturday’s 2-1 FA Cup defeat to Portsmouth, even though Leeds announced his initial spell was due to end on 31 December.

He is such a key player in Joey Barton’s side he has played the full 90 minutes of all 22 of their league matches this season as well as in all four of their FA Cup and League Cup fixtures.

Coyle has not only been a solid defender but has also laid on five goals for his teammates through assists.

In other Leeds United news, it can be REVEALED that the club have climbed into pole position to sign striker this month.