Manchester United have joined the clubs expressing an interest in Schalke defender Ozan Kabak.
The Old Trafford club are drawing up a shortlist of options to strengthen their defence and Turkey international Kabak is among the names being considered.
Sportsmail revealed in July that the 20-year-old was being considered by Liverpool, while he also has interest from RB Leipzig.
The latter are in the market for a defender as clubs are also circling around their centre-back pairing of Dayot Upamecano and Ibrahima Konate.
Both of them have buyout clauses and are also among the names being discussed at Liverpool and United.