The Uruguayan centre-back has made just three appearances in the Premier League this year and risks losing his place in the national team if he continues to sit on the bench
The 22-year-old, winner of the Best Young Player at the 2011 Copa America, has started just one Premier League match this season for the Reds - and only five since he joined the club two years ago - and is concerned by his lack of match action.
"I want to play, and most of all to be involved in the Uruguayan team like every other player," Coates told El Observador.
"With that in mind I need to play, whether in Liverpool or somewhere else. I have a contract until 2016, but don't know what will happen in the future. I will wait until the end of the season and then speak to the club."
Coates had hoped to leave the club on loan during the January transfer window but was instructed to stay by boss Brendan Rodgers, though is adamant he will continue to work hard and try and impress despite that disappointment.
"I asked [in January] if there was any chance of going on loan to another club but [Rodgers] said I could not," Coates continued.
"I almost always travel with the team and only find out on the day of when I've been left out, but I try to stay positive, train well, and wait for my opportunity."