Daniel Arzani's season ending injury for Celtic is a bitter blow for the talented Australian.
It is a disappointment for the Scottish champions and leaves them a player short, while Manchester City will be ruing the misfortune after investing in him during the summer.
Celtic should now approach City to see if they can acquire the ideal replacement for Arzani, the player they originally wanted, Patrick Roberts.
Roberts spent the past two seasons at Celtic and starred during their undefeated season.
City were not willing to sell this summer and chose to loan him to Spanish side Girona.
So far it is a deal which is doing the 21-year-old few favours.
He has played only 177 minutes of La Liga football in three months, less than two full matches combined; split across seven brief appearances.
Roberts did finally makes his first start at the weekend in a win over Valencia, but it remains to be seen if this is a one off or the start of a trend.
Celtic should at the least have a discussion with City to see if they can present themselves as a better option for Roberts given his struggles so far.
They have a need for another winger after Arzani's injury, and if Roberts' lack of gametime continues between now and January, a pathway for a return to Glasgow may be possible.