Manchester United have potentially gained a huge advantage in their bid to progress into the quarter-finals of the Champions League as Atletico Madrid left their tactics board at Old Trafford.
The Spanish Champions trained at the ground on Monday night before returning to their city centre hotel ahead of their second leg last-16 tie.
Staff were quick to realise the board was missing after unloading their kit and equipment.
The vehicle that dropped them off, however, had already left and a panicked member of the Atletico backroom team immediately asked for it to return so they could get back to Old Trafford, according to the Sun.