Man Utd: Louis van Gaal angry at 'stupid' Chris Smalling. Aren't we all?

 Manchester United manager Louis van Gaal says Chris Smalling's sending-off in the Manchester derby was "stupid".

Smalling was dismissed before half-time for two bookable offences - the first for charging down Manchester City keeper Joe Hart's drop kick, the second for a wild challenge on James Milner.

City won 1-0 with a 63rd-minute goal from Sergio Aguero.

"In a derby you have to be careful - the second yellow card is a stupid yellow card," Van Gaal told BBC Sport.