"If I felt I could actually help and contribute? Then yeah, of course [I'd suit up]," Donovan told The Dan Patrick Show. "That's a million miles away, I've played a total of like 20 minutes now in two years."
Donovan was also asked if he would join Klinsmann's coaching staff if asked, and after a long pause, he said: "Again, if I felt I was able to contribute, I'd consider it... Why not?"
The 34-year-old, who ended his Major League Soccer retirement of nearly two years to return to the Galaxy, has come off the bench in two matches.
On Sunday, he scored the equalizer as a substitute in his team's 2-2 draw at Sporting Kansas City.It was his first regular-season MLS goal since Sept. 28, 2014.
Donovan is widely considered the most accomplished player in American soccer history and the most successful player in the history of MLS, which named its MVP award after him.
He is the league's all-time leader in goals and assists, and is also the top scorer in U.S. men's team history, with 57 goals in 157 appearances.
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Video via MLS: SKC 2-2 LA Galaxy
A week after making his MLS return, Landon Donovan scored to tie the match and split the points for LA and Sporting Kansas City.