Louis van Gaal has always said it could get worse before it gets better at Manchester United.

He couldn't have thought it would get this bad.

Barely two months ago, a jubilant Van Gaal was leaping out of his seat and high-fiving his Netherlands players after masterminding a 5-1 thrashing of Spain at the World Cup in Brazil.

Compare that to the glum, stony-faced figure of Van Gaal who remained glued to his seat during United's humiliating 4-0 loss to third-tier club MK Dons in the second round of the League Cup on Tuesday.

Even though United fielded a virtual reserve team, it was one of the most embarrassing results in the club's history and raised serious doubts about Van Gaal's 3-5-2 formation and the squad's strength, especially in defense.