United can move within five points of the Barclays Premier League leaders with victory at Stamford Bridge on Saturday evening.
But their chances of winning have been harmed after Van Gaal revealed that Marcos Rojo, Phil Jones, Daley Blind and Michael Carrick will all be missing for the game in London.
With Jonny Evans still suspended, that leaves the United manager with Chris Smalling, Paddy McNair and Tyler Blackett as the only available centre-halves.
Source : PA
Source: PA