The 20-year-old England international has been restored to the starting lineup under new head coach Michael Carrick after being frozen out by former boss Ruben Amorim. However, negotiations remain delicate with unresolved issues between Mainoo's representatives and club officials.
Mainoo agreed to a compromise on his salary but didn't receive a response from United until Amorim was fired in January. The midfielder currently earns significantly less than his teammates, a situation that increasingly feels outdated given his growing influence on the pitch.