Arsenal boss Mikel Arteta found positives in Reiss Nelson's performance for their draw with PSV this week.
Nelson was handed a rare start in the Champions League tie.
Arteta said on Friday: "I think he had a really good game.
"As you said, he was really lively and really brave in his decision-making. He generated three or four big situations. He worked so hard and he had to be subbed at the end because he was cramping.
"I think he had a really positive impact on the team."