Celtic signed Odsonne Edouard on a season-long loan.
Kristoffer Ajer joined Celtic as a 16-year-old, and is now an established member of the first-team squad.
Alfredo Morelos has been a huge success at Rangers.
Rangers host Celtic in the Old Firm derby this weekend.
Barry Ferguson has ignited the passion in Rangers fans by remembering one of their greatest days against Celtic.
Celtic boss Brendan Rodgers is clearly fired up for the Old Firm derby.
Celtic manager Brendan Rodgers believes that Moussa Dembele is back to his very best.
The inevitable league split is coming up, and it will be interesting to see which of the Old Firm sides thrives under the unique system this season.
Rangers' Declan John is at risk of missing the Old Firm derby due to a groin problem.
Celtic supporters have let their feelings be heard regarding the poor conditions at Aberdeen's Pittodrie.