Celtic are ready to launch an improved fourth bid in their quest to secure the services of Scott Sinclair this summer.

According to the Birmingham Mail, Celtic are set to launch an improved fourth bid of around £4 million to help push through the transfer from the Championship side.

The winger would link up with former Swansea manager Brendan Rodgers and former Manchester City team-mate Kolo Toure, who signed a one-year deal earlier this week.

The 27-year-old excelled for Swansea during their promotion to the Premier League in 2010/2011 under the Carnlough man, and scored 27 goals in 50 appearances.

However, since his £8 million transfer from Swansea to Manchester City, Sinclair struggled to get into the team, making just 19 appearances in total and was loaned to West Brom and their Midland rivals, Aston Villa.

Sinclair made 45 appearances for Villa scoring nine goals during an 18-month period at the club, including his six-month loan spell in 2015.

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Villans boss Roberto Di Matteo did previously express a desire to trim his squad and could be set to let one of his best players leave in order to reach that goal.

The 27-year-old winger would become Rodgers third signing of the transfer window, after the arrival of Moussa Dembele and Kolo Toure earlier this summer.