Many fans voiced their disapproval online, expressing disbelief at what they see as another example of the club chasing profits at the expense of footballing priorities under the Glazer family and part owners Sir Jim Ratcliffe and INEOS.
A United fan, @majorlaw2008, warned on X about potentially repeating the mistakes of last summer, when Erik ten Hag saw a number of players suffer injuries before the start of the new season: "How about prioritizing tactics and match fitness of the players. Remember what happened with Ten Hag in the last pre-season."
Another fan, @TheNorthernLad_, bluntly wrote: "Money money money."
While, @charlesmarr22, added: "Awful. No wonder half the side is injured."
Meanwhile, @left_unheard, said: "This needs to be banned. Managers moan about fatigue and player welfare then 2 days after the season ends jet off to the other side of the world for a friendly in 30c weather all for money. Fans are bored of this and the over-commercialisation of football."
@ClairClair211, wrote: "No wonder they're knackered players deserve a proper break, not to be money-making robots for the club."