Leaders Leicester are one point ahead of second-placed United ahead of the meeting between the two sides at the King Power Stadium on Saturday.
The bookmakers do not expect the Foxes to remain there for the rest of the campaign but Van Gaal believes there is a chance they could lift the trophy.
"It is possible, I think," the United manager said when asked if Claudio Ranieri's team could win the league.
Source : PA
Source: PA