As per Manchester Evening News, the confrontation started when a fan seated in the Stretford End shouted, "If you wanna go, go!" at Rashford who was warming up.
The forward halted his session and moved towards the forward who continued to point at the Man Utd badge on his jacket. Rashford did the same and exclaimed, "Why don't you go?" to the fan, while another fan defended the winger saying, "Rashford, don't listen to him!" trying to defuse the situation.