The Spanish youth international returned to parent club Barcelona in the summer following a loan spell with Everton, but was immediately sent on loan to Sevilla.
His attitude was questioned in the early part of the campaign, but the winger has impressed for Sevilla in the last couple of weeks.
"I have to work. That's the daily bread. If you don't play, you have to work to earn it," he told Marca.
"I think I've done well when I have played. We'll see if I can gradually force my way into the team. It's difficult because there's a lot of competition , but I'm getting there slowly."
As it stands, Deulofeu will return to Barca next summer.