Morgan Schneiderlin has reacted angrily on social media after being told he will not be allowed to leave Southampton.
Brighton and Middlesbrough are continuing talks with Huddersfield Town over Adam Clayton, Sky Sports understands.
Hearts will challenge the Scottish Premier League after being hit with an indefinite transfer embargo over a failure to make payments to players, manager John McGlynn said on Friday.
The SPL announced Hearts have "not paid a number of bonuses and appearance payments" and also face a disciplinary hearing, with a full range of sanctions at the league governing body's disposal.
Hearts responded to the SPL statement saying they were taking legal advice and McGlynn revealed the extended sanction will be fought.
"We're going to challenge it," McGlynn said.
"It's difficult to talk about it because we're going through lawyers."