The Red Devils were knocked out of the Champions League by Sevilla on Tuesday and stand a whopping 16 points behind Manchester City in the Premier League, leaving Mourinho facing criticism for his perceived negative tactics.

The United manager aims to add four new faces before the 2018-19 campaign kicks off, according to the Independent, with a new centre-back partner for Eric Bailly and a holding midfielder at the top of his list.

Barcelona's Samuel Umtiti and Tottenham's Toby Alderweireld are thought to have been discussed in the corridors of power at Old Trafford, while Paris Saint-Germain's Marco Verratti is another player Mourinho admires.

The Sun claims in-form Chelsea forward Willian is being lined up for a £60 million switch after Mourinho instructed his scouts to watch the Brazilian, who played for him when he managed at Stamford Bridge, on several occasions this season.

The Daily Mirror has a different take on the current crisis at United, however, suggesting that the club's hierarchy could be ready to find a new manager after seeing little reward for a £300 million outlay over the past 18 months.

Mourinho insists that more spending is required to keep up with Manchester City, leading to a potential fallout that could pave the way for him to join PSG in the summer.