FT
Red Bull Salzburg
2
–
2
Celtic
—
FT
Celtic
1
–
0
Dinamo Zagreb
—
FT
Celtic
2
–
1
FC Astra Giurgiu
—
FT
FC Astra Giurgiu
1
–
1
Celtic
—
FT
Celtic
1
–
3
Red Bull Salzburg
—
FT
Dinamo Zagreb
4
–
3
Celtic
—
FT
Celtic
3
–
3
Inter
Started
FT
Inter
1
–
0
Celtic
Started
Faded rows: team matches without G. Mackay-Steven in the lineup