Manchester United will phone Marcos Rojo to remind him of his lockdown responsibilities.
The Argentine defender is currently on loan at Estudiantes until the end of this season.
A video posted on social media showed the centre back playing poker and smoking with his friends. The video was later deleted.
Argentina is in lockdown until May 10, with gatherings not permitted.
The 30-year-old has spoken of his desire to extend his stay at Estudiantes, with the pandemic limiting his output to just one appearance.