Denis Suarez has had to be patient since arriving on loan from Barcelona last month.
The Spanish midfielder has been restricted to four appearances off the bench - but could he start against Bournemouth on Wednesday night?
"I am very demanding of myself to find the best performance with the players," Unai Emery said. "I think Denis Suarez is improving first with the adaptation every day and then his quality can give us a lot.
"I think it's not okay today [for him] to play 90 minutes, because he needs rhythm, but one possibility is to start tomorrow knowing that. Or, stay on the bench and after he can help us. And it's the same with other players.
"He is working every day, improving and knowing us. My philosophy is that adaptation needs time and after, little-by-little he will grow confidence and know his teammates in training and after playing matches.
"For him, all the minutes he can get to help us are very important. On Sunday for example my idea was to give him some minutes, but after recent injuries, I cannot give him these minutes. But tomorrow is another opportunity."
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