Andre Carrillo was a regular prior to Gracia's arrival, but has found himself on the bench in recent weeks, while Dodi Lukebakio joined late on in the transfer window and made his debut as a late substitute at West Ham.
"He is a young player and I think we need him to improve like all the players," Gracia said of the Belgian winger before Saturday's victory over Everton.
"I think in the future he will help us and I am happy with his attitude. Not only him but with Carrillo who didn't play the last match and I am very happy with their attitude. I will try and choose the right players for each moment."