Unai Emery has revealed the reason he left Alexandre Lacazette and Nicolas Pepe on the bench as Arsenal were beaten by Eintracht Frankfurt.
The Gunners relinquished a one goal advantage to ultimately lose 2-1 in the Europa League.
They remain in pole position to proceed to the next round, but the defeat is a critical opportunity missed to relieve some pressure on Emery.
Arsenal spent the last 30 minutes of the match desperately searching for an equaliser and Emery says injuries to David Luiz and Shkodran Mustafi stopped him from bringing on attacking duo Lacazette and Pepe.
Asked why Lacazette and Pepe remained on the bench for the entire match, under-fire Gunners manager Emery said: ‘We had some injuries.
‘We needed to change David Luiz and then we had a problem with Mustafi. Two injuries meant we had to make those changes.’
Meanwhile, Granit Xhaka appeared to have picked up a knee injury in the first-half and was unconvincing for the rest of the match.
The Swiss international had returned for the first time since his spat with the fans last month.