A new theory has emerged after Erik ten Hag ruthlessly replaced Marcus Rashford at the break during Manchester United's game at Porto. Rashford opened the scoring in his side's Europa League clash against Porto on Thursday. However, his outing in Portugal was cut short after he was substituted during the interval, with Alejandro Garnacho coming on.

Rashford has endured a torrid 18 months of form and eyebrows were raised at the substitution given that he was finally showing glimpses of the player who had taken the Premier League by storm in years gone by, opening the scoring after seven minutes and creating several other clear-cut chances.

Erik ten Hag made the surprise decision to take off Marcus Rashford at half-time during Manchester United's 3-3 draw against Porto, citing the need for rotation