Former Chelsea midfielder Gallagher is interesting Manchester United and Tottenham ahead of the January market.
The 25-year-old is not hiding that he wants to play more, but does not seem to have any plans to move.
"I'm not happy. I don't think anyone will be if they don't play as much as they would like, but I will continue to work very hard to, when I have the opportunity, help the team and hopefully there will be more opportunities to be a starting player," he tells AS.
"I am very happy here. My goal is to win titles with Atleti and I want to have a bigger role in the team. And as I said, I will continue to work as hard as possible to play more minutes and be able to help the team."
The midfielder is aware that he needs to play regularly to make it into England coach Thomas Tuchel's World Cup squad this summer.
"That's one of my goals. I've spoken to Thomas Tuchel and he's told me what he needs from me and what I have to do to get back into the national team," said Gallagher.
"And it seems like it's very difficult for me to reach that point right now. But as I said before, I will continue to do my best to get more minutes and hopefully get back to the national team."