The winger scored on his debut for the club on Sunday, just hours after joining from Aston Villa.
Scott Sinclair has admitted to Celtic's official website that the damage done to his confidence over the last few years was a key reason for his move to the club, as he turned to old mentor Brendan Rodgers to revive his career.
Sinclair joined the Bhoys in a £3.5 million deal from Aston Villa on Saturday, linking up with his former Swansea City manager and Reading youth and reserve coach Rodgers in the process.
The 27-year-old made the perfect start to life with the Hoops by coming on as a substitute midway through the second half of the Scottish Premiership opener against Hearts on Sunday and scoring the winner with just nine minutes remaining.
Though it is still early days, Sinclair - and Celtic fans - will be hoping that the move has breathed fresh life into a career which had somewhat stagnated over the last few years.
Since leaving Rodgers' Swansea for Manchester City in 2012, Sinclair has made just 30 league starts across four seasons for City, West Bromwich Albion, and Villa.
He was honest in admitting his frustrations at how the last few years have gone for him when talking to reporters on Monday, and revealed that it was the chance to be reinvigorated by Rodgers once more that sold him on the move.
Sinclair said, via the club's official website: "There was a massive impact from the manager in my decision to come here. I’ve played under him at Swansea and that was my best football, which led me to sign for Manchester City.
"Over the last two or three years football hasn’t been great for me and I just wanted to be at a club and enjoy it under a manager who knows me and gives me confidence. That’s why it’s great for me to work under a manager like Brendan Rodgers.
"I want to play football and enjoy it, be back being passionate. It's as simple as that. When I enjoy it, I play at my best and the manager knows that from me working under him."
Sinclair will now be targeting become a regular player in the starting XI for a club for the first time since he played under Rodgers at Swansea.
He could not have got off to a better start, and it could be a completely revitalised player that Hoops fans find themselves watching this season.