The USA international was offered another loan deal by the Toffees following his successful stint at the start of 2010 but declined, saying he needed a rest after a hectic season with the Merseyside club as well as with the Galaxy and the national team.
But the 28-year old told Everton fan site, followtonians.com, that he will head back to Goodison Park one day.
"It wasn't easy for me. After the season ended, my immediate thought was that there's no way I am going to be ready [to play for Everton]," Donovan said.
"I don't know in what capacity it will be, but I really, really hope that the offer still stands to go back next year and that also weighed into this decision.
"I don't know what the proper analogy is, but if you went to Disneyland when you were five years old, you're always going to want to go back."