Normally a player signing for a team for a third time would seem quite odd, but Patrick Roberts is worth taking that risk over.
The 21-year-old left the Hoops at the end of the season, after his second loan spell with the Bhoys came to an end and he returned to Manchester City.
But his future at the Premier League champions looks to be in limbo. He was linked with a move to Leicester City, but their interested looks to have cooled after signing James Maddison from Norwich.
It seems highly unlikely he will ever be able to make the breakthrough to the Manchester City side, so it would be best for him if he moved on in the summer – and Brendan Rodgers must think about bringing him back to Glasgow on a permanent basis.
The player seemed to have loved his time in Glasgow, and surely he will want to make up for his last season with the Bhoys, which was ruined by a long-term injury.
As for what he would bring to the Hoops, on his day he is one of the best players in the country and last season he was one of the few Bhoys to make an impact in the Champions League, with a goal against Anderlecht.
It was reported last year that Pep Guardiola stopped the player joining the Hoops on a permanent deal, but the Bhoys should ask Guardiola about Roberts once again.
He or the player might say no, but it is well worth a try.
In other Celtic news, Leigh Griffiths has vowed to become the number one striker for the Hoops