West Ham have enquired about Bayern Munich right-back and Noussair Mazraoui and firmed up their interest in Leeds United winger Crysencio Summerville but remain apart on valuation.
26-year-old Mazraoui has spent two seasons at the Allianz Arena, having joined on a free transfer from Ajax in the summer of 2022.
The full-back came through the ranks at Ajax, where he played under current Man United boss Erik ten Hag.
He was also a member of the Morocco team that overcame the odds to reach the semi-final of the 2022 World Cup.