Millwall have been linked with a summer move for Swansea full-back Angel Rangel.
The Spaniard will be out of contract at the end of the season and his agent, Xavi Cruz, claims Lions boss Kenny Jackett is monitoring the situation.
Cruz told the South Wales Evening Post: "I have heard of Millwall's interest."
He added: "In the summer we will listen to the managers and make a decision based on what is best for the player and the club he goes to.
"Now is not the time to discuss it because Swansea still have to complete their season and probably the play-offs."
Fourth-placed Swansea travel to Millwall, who are two points outside the play-off places, on Saturday.
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