Liverpool defender Martin Skrtel has hit out at the club for giving him an "unacceptable" new contract offer.
Skrtel is out of contract next summer and his decision to go public with his disappointment at the new terms he has been offered casts doubt on his future at Anfield.
The central defender is quoted on the Slovakian website Akualne as saying: "It's unacceptable for me. I think that contracts like this offered to players who are much older than me or the player who had some health problems.
"The contract which has been offered to me is unacceptable, so I did not sign it. I have one year left and there has been some speculation about the interest from other clubs. We will see what happens."
Skrtel's form suffered last season - along with many other Liverpool players - but he remains the club's most experienced central defender and manager Brendan Rodgers will be anxious not to lose him.
It is another headache for Rodgers, who is already wrestling with keeping one disgruntled player on Merseyside in the form of Raheem Sterling and the departure of former captain Steven Gerrard to LA Galaxy.
Skrtel went on to say in the interview that the reason for Liverpool's slump in form last season - when they collapsed from second in 2014 to sixth - was the departure of Luis Suarez to Barcelona.
"We failed because we did not meet the targets we have set. If we finish in fifth or sixth, it does not matter, we would still not qualified for the Champions League.
"The significant factor was the exit of Luis Suarez [to Barcelona last summer] and too many errors on the field. The squad was big enough.
"New players arrived and it is not always easy to acclimatise with the new club, so the first half of the season was difficult. The second part has been improved, but the conclusion was we did not reach our targets."