Van Gaal is planning to reinforce his hailing backline with a move for an accomplished backman in the following exchange window.
Keeping in mind United are intrigued by Borussia Dortmund pro Mats Hummels and Aston Villa hardman Ron Vlaar, both are unrealistic to leave in January.
The Dutchman has turned his consideration regarding Garay, 28, who inspired close by International team-mate Red Devils new kid Marcos Rojo at the World Cup.
Garay featured in focal barrier as Argentina arrived at the last, in which they lost 1-0 to an additional time Mario Gotze shocker.
Furthermore Van Gaal needs to rejoin Garay and Rojo at Old Trafford, permitting him the choice to move the £16million summer marking to left-back if necessary.
United apparently sent two scouts to watch the Zenit St Petersburg player in activity amid the Champions League conflict with Bayer Leverkusen on Wednesday.
Despite the fact that Garay just joined Zenit for £12m from Benfica this mid year, United are situated to press ahead with a move to bait him away in January.
Chelsea, Liverpool and Tottenham have all been connected with the one-time Real Madrid player in late exchange windows, yet United are prepared to beat their adversaries to sign the Lad.
Written by Steve Milne