The Saints’ hunt for a new midfielder appears to be coming to an end as they have reached an agreement with Ligue 1 side Brest to sign Diallo.
Southampton are claimed to have agreed to pay the French club a fee of €15m for the midfielder’s signature, but the final details are yet to be ironed out.
The Saints are set to line up a medical for the 21-year-old on Saturday and hope to get the deal over the line before Sunday’s game against West Brom.
Diallo has agreed to put pen to contract on a four-year deal with Ralph Hasenhuttl’s side as he edges closer to a move to England.
The France Under-21 international would become the second new player to come through the door at St. Mary’s in the current transfer window, after Mohammed Salisu.
Southampton also made Kyle Walker-Peters’ loan move from Tottenham Hotspur permanent.
It remains to be seen if the Saints will look to do more business before Monday’s transfer deadline.
