Manchester United, Van Gaal facing serious questions after humiliating exit in League Cup

Manchester United Manager Louis van Gaal, centre rear, shows his dejection after their defeat by MK Dons in their League Cup Second Round match at Stadium:mk, Milton Keynes, England, Tuesday Aug. 26, 2014. MK Dons defeated Manchester United 4-0. (AP Photo/PA, Nick Potts) UNITED KINGDOM OUT NO SALES NO ARCHIVE (The Associated Press)

MK Dons' Will Grigg jubilates after scoring a second goal against Manchester United during the League Cup Second Round match at Stadium:mk, Milton Keynes, England, Tuesday Aug. 26, 2014. MK Dons defeated Manchester United 4-0. (AP Photo/PA, Nick Potts) UNITED KINGDOM OUT NO SALES NO ARCHIVE (The Associated Press)

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.