Leigh Griffiths says he didn't deserve a place in Scotland's squad for the Euros after playing a "bit-part" at Celtic last season.
Celtic will face FC Midtjylland in the second qualifying round of the Champions League.
Champions Rangers kick off their Scottish Premiership defence at home to Livingston, while Celtic are at newly-promoted Hearts, both live on Sky Sports on July 31.
Rangers will begin their Scottish Premiership title defence against Livingston on Saturday, July 31, live on Sky Sports.
Ange Postecoglou will travel to Hearts in his first Scottish Premiership game in charge of Celtic, with the opening-day clash live on Sky Sports at 8pm on July 31.
Aberdeen start their 2021/22 Scottish Premiership campaign against Dundee United on August 1.
Newly promoted Dundee will face arch-rivals Dundee United at Tannadice on September 18 in the first top-flight Dundee derby since 2016.
Hibernian go to Motherwell in their Scottish Premiership opener on Sunday, August 1, live on Sky Sports.
Dundee United will entertain arch-rivals Dundee at Tannadice on September 18 in the first top-flight Dundee derby since 2016.
Sky Sports' Charles Paterson analyses the immediate challenges that face new Celtic boss Ange Postecoglou at Parkhead...
Rangers brought an end to a decade of despair in March as Steven Gerrard's side secured their 55th top-flight Scottish title - but where do Rangers go next?
Who makes your Scottish Premiership Team of the Year from the 2020/21 season? Have your say in our team selector.
On the three year anniversary of his appointment, we chart the extraordinary journey Steven Gerrard and Rangers have been on to become Scottish Premiership champions.
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