Celtic confirm star signing as contract details revealed - plus new friendly added to schedule
Defender returns to Celtic Park after six years at Arsenal
'Top class' - Celtic title winner in Rangers admission as ex-loanee links up with ex-Arsenal ace in £5.1m deal
The former Celtic defender played 18 times for the Scottish Premiership champions last season but left in January in order to move to the Serie A.
Forgotten Scotland striker scores first EPL goal as Celtic-bound Kieran Tierney leaves Arsenal in style
Defender nets only his fifth goal for Gunners as he waves goodbye
Arsenal vs Rangers: TV details, what channel, how to watch Women's Champions League clash
Rangers head to Arsenal in the UEFA Women’s Champions League. Here’s where you can stream the game live.