The Premier League side arguably need to strengthen their defensive ranks in the coming months.
The Black Cats have often been forced to rely upon the likes of John O'Shea, Younes Kaboul and Wes Brown at the heart of their defence this season, and with all three being over 30 years of age - with O'Shea and Brown well into the twilight of their respective careers - it appears that Allardyce is looking to freshen up his options by signing the 23-year-old.
His ability to play in both the centre and on the right of the back four is also likely to appeal to the Sunderland boss, especially as his arrival would provide the team with cover for when DeAndre Yedlin's loan spell comes to an end at the end of the campaign.
However, it seems unlikely that the Ligue 1 side will allow the defender to move to the Stadium of Light on the cheap. The Mail reports that Soumaoro's current contract with the club runs until 2019, and the fact that he has been one of Frederic Antonetti's side's strongest performers this term means that they are surely going to be desperate to keep hold of him.
But if the Premier League team are able to drag themselves away from danger in the top flight, then Allardyce may be able to convince Soumaoro that he is attempting to build something with the club, and he wants the youngster to be a key part of that.
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