The pair were forced to miss training on Friday, after picking up knocks during Los Merengues' friendly win over LA Galaxy, and are now uncertain to play in Las Vegas on Monday
The duo were absent from Friday's training session following the 5-1 victory over LA Galaxy, with Gonzalo Higuain, Jose Callejon, Alvaro Morata and Jese, joining Di Maria on the scoresheet for Jose Mourinho's side.
Both Di Maria and Arbeloa featured for 45 minutes during Friday's win, but both then complained of slight discomfort following the match.
As a precaution neither trained after the game, with Mourinho keen for both players to feature in the later stages of the North American tour.
Los Blancos face the Mexican outfit Santos Laguna in Las Vegas on Monday, with the Supercopa clashes against Barcelona yet to come on August 23 and 29.
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