There are a vast array of Saints on international duty, including Virgil van Dijk, Steven Davis and Dusan Tadic.
Wolverhampton Wanderers are in the midst of a woeful run of form in the Championship.
The free agent signed for Rotherham last month and made his first appearance for the club against Preston North End.
Everton were quoted £60 million for Koulibaly, but on-loan Leeds United man could be a cheaper alternative.
Tottenham Hotspur defender Ben Davies is set to miss out on playing against West Ham United.
Jamie Vardy, Jeffrey Schlupp and record-breaking Andy King are among the Foxes on international duty.
Three wins in five, the play-offs in sight, it is all feeling positive again at Aston Villa.
Queens Park Rangers are reportedly in talks with Ian Holloway.
Sheffield Wednesday's promotion challenge has derailed in recent weeks.
Everton and West Ham United are reportedly interested in signing Napoli striker Manolo Gabbiadini.
José Mourinho has questioned the willingness of some of his Manchester United squad to play through the pain barrier, with Luke Shaw and Chris Smalling appearing to be among those the manager had in mind when he expressed his frustration and insisted that mentalities would have to change.
Jack Wilshere has been rewarded for his first run of 90-minute matches for more than two years with an England recall after Dele Alli was forced out of Gareth Southgate’s plans for the next two games with a knee injury.
Steven Gerrard could be set to call time on his playing career after his Major League Soccer side LA Galaxy were knocked out of the MLS play-offs.