Rangers look set to sign midfielder Ryan Jack on a free transfer.
Aberdeen boss Derek McInnes has been linked with a potential move to Scottish Premiership rivals Glasgow Rangers.
Here is the latest news involving Celtic and Glasgow Rangers almost a month before the transfer window reopens.
Matt Ritchie has been criticised by former Scotland defender Willie Miller.
Newcastle defender Grant Hanley has been criticised for his performance for Scotland against Malta.
Celtic left back Kieran Tierney has been praised by former Scotland international Willie Miller.
Celtic played out a 2-2 draw with Fenerbahce in the Europa League on Thursday evening.