Manchester United fans have taken to social media to express their outrage over the decision to award Real Sociedad a penalty in their Europa League clash on Thursday.
On the back of an impressive victory over Liverpool at the weekend, United appeared sluggish in Erik ten Hag's maiden European fixture in charge of the club, with his side going into half-time goalless at Old Trafford.
However, worse was yet to come for United after the break, when David Silva's close-range shot struck the leg of Lisandro Martinez before ricocheting into the Argentine's elbow.