Dos Santos told W Radio Colombia: "I'm on vacation right now and I do not have much contact with him.
"But it is certain that this offer exists. I do not know what he will do. I'm happy for him. That Barça wants him is a nice thing for him."
Dos Santos insists the offer is the form of a loan to the end of the season.
He continued: "Who could say no to playing with (Lionel) Messi for four months and then returning to Los Angeles? Have fun, learn and get back home."