Skysports.com understands that Southampton have opened talks with Celtic over Dutch defender Jos Hooiveld.
The Saints have made their move to try and tie down Hooivled as they look to fend off interest from rival clubs.
Skysports.com understands a number of Premier League clubs are closely following Hooiveld after he impressed during his stay at St Mary's.
The central defender joined Southampton in August on a loan deal until January.
The 28-year-old has since emerged as one of the best defenders in the Championship, playing a pivotal role in their fine form which has taken them clear at the top of the table.
Southampton are now hoping to finalise a permanent deal for the former FC Copenhagen man which would see him sign for the club in January.