The Barcelona forward played 25 minutes in Spain's lacklustre 0-0 draw with Cape Verde in their opening, his first appearance in nearly two months.
Spain face Saudi Arabia on Sunday, with Lamine's fitness already a central talking point as the European champions look to ignite a campaign that began with a splutter rather than a sparkle.
"I'm fine, I'm feeling good, but it's too soon, it's unnecessary; I'm still settling in – it's not the right time to play a full match yet – but I can play for as many minutes as the manager wants," Lamine told Spanish public television TVE.
“I want to be on the pitch; at the end of the day, even if you know you can’t play for 90 minutes, you always want to get out there and help the team.”
Lamine, who helped Spain win a record-extending fourth European Championship title in 2024, said the injury had inevitably made him think about the World Cup.
"All players in the final stages of the season – with every injury, you think about the World Cup, and obviously about your team, but the World Cup is always on your mind," he said.
"After I've heard about the injury, thank God the doctors told me I was going to be ready, and here we are, happy. I hope I never get injured again."
Spain's draw with Cape Verde prompted criticism, but Lamine said the reaction should not become a drama.
"It's best to move on," he said. "There was a bit of a fuss over a draw, but in the end lots of teams have struggled in the first round – it doesn't mean anything.
"Obviously, we have to win on Sunday because we're among the favourites, but just because you've drawn doesn't mean you're one of the worst teams in the World Cup."
FIFA World Cup 2026
The 2026 World Cup is taking place from June 11th to July 19th in the United States, Canada and Mexico. The tournament features 48 national teams and is played at 16 modern stadiums.
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