The 24-year-old enjoyed a promising loan spell with the Scottish Premiership side.
John Guidetti has admitted that he loved his time at Celtic and has left the door open for a potential return to the club in the future, the Sunday Mail reports.
The Sweden international joined the Hoops from Manchester City on loan for the duration of the 2014-15 campaign, and went on to make a great impact at Parkhead.
He scored 15 times in all competitions for the Bhoys – which included a hugely impressive run of 11 goals in 10 games shortly after his move – to help the side clinch the Scottish Premiership title and League Cup trophy.
And the Celta Vigo forward admitted that he would not be in the position he is now if it was not for his time with Celtic.
“I loved my time at Celtic – it was amazing. It was a chance to play for a fantastic club,” he told the Sunday Mail.
“And there were some moments at Celtic – like scoring against Inter in the Europa League – that gave me the opportunity to sign for Celta Vigo.”
Guidetti went on to suggest that the loan spell may not be the only chapter of his career that is written while he is with the Hoops.
“You never know, maybe I’ll come back to Celtic one day. I was very happy in Glasgow,” he added.
“The supporters there were always amazing towards me.”
With new Bhoys boss Brendan Rodgers taking over a side that was over-reliant on Leigh Griffiths for goals this past season, Guidetti would surely be the kind of acquisition that would bolster the club’s chances of going on to win a sixth league title in a row.
However, his form in La Liga may make a move incredibly difficult to engineer. He scored 12 times in all competitions, including a strike in the 4-1 victory over Barcelona in September, so it seems hugely unlikely that Celta will be willing to let him go even if his old side wanted him back.
And with BBC Sport reporting when he moved to Spain that he had signed a five-year contract, the asking price may be too high for Rodgers to even contemplate a deal.
But with Guidetti suggesting that he would like to return one day, it appears that if the Hoops can agree a fee at some stage, they will need to do very little to convince him to come back.