By Alex Stevens

Celtic have made an official approach for Liverpool defender Jon Flanagan, according to a report.

The Scottish Sun claim Brendan Rodgers has sanctioned a swoop for the versatile full-back after failing with a series of moves for players he managed while manager of the Premier League club.

It is said Celtic are eyeing a season-long loan deal but Liverpool might only be open to the permanent transfer of the 23-year-old Liverpool academy graduate.

The report says that Jurgen Klopp may be willing to sell Flanagan if the deal is right, although Liverpool are convinced that the player has a significant transfer value.

Rodgers has also been linked to his former club with moves for Andre Wisdom, Joe Gomez and Joe Allen, as well as Steven Caulker, who spent the second half of last season on loan at Anfield.

Flanagan made his comeback earlier this year after nearly two years on the sidelines with serious knee problems.

He captained Liverpool in their 3-2 defeat at Southampton in March but was mainly used as deputy to senior right-back Nathaniel Clyne.

Rodgers brought Flanagan through the ranks when he was at Liverpool and he was an integral player in the 2013-14 season when Liverpool came so close to winning the Premier League title.

Celtic are looking light on numbers at the back with Erik Sviatchenko the only fit senior centre-half as Dedryk Boyata and Jozo Simunovic recover from injuries while Charlie Mulgrew is still deciding over a new deal at the club.

In other Celtic transfer news, Galatasaray are ready to open talks with the Bhoy’s over a summer move for Stefan Johansen.