Manchester United have identified Jules Kounde and Pau Torres as potential candidates to bolster the heart of their defence.
According to 90min, the club have shortlisted their targets and Kounde and Torres are being closely monitored by the scouts.
However, there are no assurances that the Red Devils could sign either player due to the hefty price tags involved.
Kounde has a £70m release clause on his Sevilla contract while Villarreal are reluctant to sell Torres for anything less than £50m.
United could lose the services of Eric Bailly this summer with the Ivorian reluctant to put pen-to-paper on a new contract.
Bailly has played second fiddle to Victor Lindelof and Maguire for the central defensive positions over the past 20 months.
The Ivory Coast international is frustrated with his situation and could be sold when he enters the final year of his contract later this year.