Mane was of interest to Manchester United last summer, but Southampton turned down a bid from their English Premier League rivals. However, with Louis Van Gaal in need of pace, verve and goals in his lineup, Manchester United are ready to go in with another bid in this January transfer window.
The situation has changed a little in terms of Mane's availability, after the Senegal international striker was left out of the squad against Norwich for disciplinary reasons. Ronald Koeman was highly critical of Mane, after the 23-year-old came in late for a team meeting.
That disciplinary issue has caused problems in the relationship between Koeman and Mane, leaving the Southampton hierarchy with a decision to make. Mane believes he was late for the team meeting after Koeman brought it forward by ten minutes, and Southampton are hopeful of a fruitful conclusion to the issue.
However, Mane has told Southampton he will not be signing a new deal with the club, according to the Daily Mail, with his current contract expiring in the summer of 2018. The Daily Mirror reports, Manchester United will be joined by Chelsea and Bayern Munich in tempting Southampton to sell Mane in the January transfer window.
A fee of Â£30million has been mooted, but Southampton are likely to resist offers in the winter window, and instead, reassess the situation in the summer. If Mane remains firm on not signing a new deal, the Saints are likely to listen to offers for the striker in the summer.
Manchester United and Chelsea, though, would prefer a deal in January, with both sides in need of reinforcements, but it would take a crazy bid from both teams to tempt Southampton to sell.