Manchester United fullback Aaron Wan-Bissaka appeared in the directors' box against Real Sociedad – despite being named on the bench.
The right-back was listed among the substitutes for United's 1-0 Europa League defeat to Real Sociedad.
But the Manchester Evening News the 24-year-old showed up in the directors' box just before kick-off.
And he played no part in the game as a controversial Brais Mendez penalty condemned Erik ten Hag's side to defeat.
Victor Lindelof was shuffled over to right-back when Lisandro Martinez came on at half-time.
That's despite Wan-Bissaka, a natural right-back, being named among the substitutes.
The former Crystal Palace man was pictured arriving for the game, but he was not snapped on the bench during the match.