Alejandro Garnacho moved swiftly to remove an Instagram post, after it appeared to show a vape as the Manchester United star watched the club's FA Cup win over Fulham.
The Argentinian teenager is currently sidelined after picking up an ankle injury in United's goalless draw with Southampton earlier this month, and was in a watching brief from home for Sunday's FA Cup quarter-final.
Before kick-off, Garnacho posted an image to his Instagram stories showing his set-up to watch his teammates try to book another trip to Wembley.
However, along with the big screen TV and match mementoes on show appeared to be a green 'Elux Legend 3500' vape lying on the sofa.