The Slovakian centre-back has recently been linked with Manchester City, but admits that they aren't the only interested party.
"There have been a number of offers, but without Liverpool's permission nothing can move forward. We have been in talks about a new contract, but it has not moved forward.
"At the moment I am a Liverpool player, and what happens in future in football you can never foresee. Anything can happen, but for now I have a valid contract and what is to come will come."
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