Donovan spent two and a half months at Goodison Park during the close season of his parent club, Los Angeles Galaxy, and quickly became a favourite with supporters.
But he also feels the experience helped him to find out the qualities of some of the England players he will come face to face with in the Group C contest in Rustenburg.
Donovan, his country's record scorer with 42 goals, said: "In my opinion, England are one of the top teams in the world and top teams don't have any weaknesses.
"It would be hard for me to point anywhere and find a weakness in their team. But the experience at Everton was valuable in a lot of ways, for me personally and also in getting the chance to play against some of the players we will see on Saturday.
"It also gave me the ability to understand the way their league is, the way and style most teams play in their league. Those are all beneficial things to us. Will it have a huge impact on the game, probably not. But having some comfort in that way will be helpful on Saturday."
Donovan was involved in the tackle during the Everton v Chelsea game in February in which Ashley Cole broke his ankle and put in doubt his availability for the South Africa global showpiece.
The 28-year-old has not had any contact with Cole since then but has no doubt about the qualities of the England left-back. "When Ashley Cole got injured, nothing was going through my mind. I was playing the game.
"I didn't get in touch with Ashley but he is a fantastic player, one of the top two or three left-backs in the world, and he is going to be a very good player for them."