| Sat, Jun 29 | vsFK Sarajevo | 3:30PM UTC | W 4-1 |
| Sat, Jul 6 | vsHNK Hajduk Split | 4:30PM UTC | D 1-1 |
| Thu, Jul 11 | vsFK TSC Backa Topola | 3:30PM UTC | L 1-0 |
| Sun, Jul 14 | vsCaykur Rizespor | 3:00PM UTC | W 5-0 |
| Wed, Jul 17 | @Besiktas | 4:30PM UTC | W 1-0 |
| Sat, Jul 20 | vsIpswich Town | 12:00PM UTC | L 1-0 |
| Fri, Jul 26 | @Zagreb, Croatia GNK Dinamo Zagreb | 5:00PM UTC | L 1-0 |
| Sat, Jul 27 | @Zagreb, Croatia GNK Dinamo Zagreb | 5:00PM UTC | D 2-2 |
| Wed, Sep 18 | @Bologna | 4:45PM UTC | D 0-0 |
| Wed, Oct 2 | vsAtalanta | 4:45PM UTC | L 3-0 |
| Tue, Oct 22 | @Arsenal | 7:00PM UTC | L 1-0 |
| Wed, Nov 6 | vsYoung Boys Bern | 5:45PM UTC | W 2-1 |
| Wed, Nov 27 | @PSV Eindhoven | 8:00PM UTC | L 3-2 |
| Tue, Dec 10 | vsFC Bayern Munich | 8:00PM UTC | L 5-1 |
| Thu, Jan 9 | vsZagreb, Croatia GNK Dinamo Zagreb | 2:00PM UTC | D 2-2 |
| Wed, Jan 15 | @CSKA Sofia | 10:00AM UTC | W 1-0 |
| Wed, Jan 15 | @Ludogorets Razgrad | 2:00PM UTC | W 4-0 |
| Wed, Jan 22 | vsStade Brest | 5:45PM UTC | W 2-0 |
| Wed, Jan 29 | @Borussia Dortmund | 8:00PM UTC | L 3-1 |