Newcastle United have made improved offers for Lille defender Sven Botman and Sevilla's Diego Carlos as they look to deliver new centre-backs for Eddie Howe.
Both defenders have indicated they would like to join but the deals could end up costing close to £70m in total with their respective clubs asking premium prices as they need to find replacements.
Newcastle have also held further talks over a £15m move for Marseille's Senegalese forward Bamba Dieng.
However, a deal for Liverpool's Divock Origi is unlikely.