The new signing proved to be the Hoops' hero as they bagged a win in their opening Scottish Premiership fixture.
Scott Sinclair only completed his move from Aston Villa hours before kick-off
Celtic's goalscoring hero Scott Sinclair has admitted to The Scottish Sun that he was not expecting to even be involved in his new club's game with Hearts.
The 27-year-old only completed his Parkhead switch earlier on Sunday morning, but Brendan Rodgers threw him straight into the matchday squad and gave him a place on the bench hours later at Tynecastle.
And the decision to throw the £3.5m signing straight in was certainly vindicated as he came on in the latter stages of the game, and ended up rounding off a fairytale day by scoring the winner.
And Sinclair explained that just to be in the squad was a shock to him.
"It is an amazing feeling," he told The Scottish Sun.
"I didn't think I would be involved with the squad but the manager said I was fit. It was great I could come in and score the winner."
Celtic manager Brendan Rodgers
After a difficult couple of seasons for the winger, that goal would undoubtedly have done his confidence the world of good.
Having arguably made a poor move by leaving Swansea for Manchester City in 2012, he is still yet to prove that his career did not stagnate at the Etihad.
And while he showed glimpses of quality during his time with Aston Villa, their struggles last season meant that he was rarely able to stamp his authority on a contest.
But with the Bhoys expected to play on the front foot and take the attack to the opposition, it is likely that Sinclair will have many more chances to show that he is capable of being a match-winner.