The Brazil international was frustrated when his transfer request was rejected in the summer as the club rebuffed three bids from Barcelona.
Since then speculation has continued to encircle the 25-year-old, who captained the side and scored a hat-trick in Wednesday night’s 7-0 demolition of Spartak Moscow which booked their place in the knockout stage of the Champions League, with his Catalan suitors reportedly ready to make another approach.
“I am at Liverpool and I always do my best when I have the opportunity to play, respecting the jersey and the supporters,” said Coutinho, who has scored nine goals in 13 appearances this season.
“I do not know how the future is going to be. What will happen in January, we will know it in January. I do not know if there will be an offer.
“Last summer there was a job offer in the same way that happens with any employee and I was interested in it. Since I stayed I have played with will and desire.
“Of course a lot happened in the summer but my will is always to play and do the best wherever I am – that has not changed.
“I am here (at Liverpool), we have a lot of games and I try to do my best to help.”
A goal apiece from James Tomkins and Luka Milivojevic handed Crystal Palace a crucial 2-0 win over Huddersfield at the John Smith's Stadium on Saturday evening.
Manchester United bounced back from their Champions League exit as they beat Brighton 2-0 at Old Trafford on Saturday night to reach the FA Cup semi-finals.
Tottenham reached the FA Cup semi-finals after they cruised to a 3-0 victory over Swansea in their quarter-final clash at the Liberty Stadium on Saturday.
Premier League basement club West Brom squandered the lead as they suffered a 2-1 defeat to Bournemouth at the Vitality Stadium on Saturday.
Chesterfield boss Jack Lester felt his side were unlucky not to claim all three points after their 1-1 draw at Cheltenham.
New Swindon manager Phil Brown revelled in his side's victory at Cambridge in his first game in charge.