Donovan admits he'd welcome a return to Goodison Park for a third time.
"Itâ€™s reiterated to me that I can play not one game, not two games, not three games at that level, not a World Cup tournament at that level, but that I can consistently play at that level over eight, 10, 12 games,â€ť he explained to evertonfc.com.
"And, being there I have so much respect now for guys that play 30, 35, 40 games in a season and are consistently good, because itâ€™s so demanding physically and mentally. Itâ€™s really draining and itâ€™s very demanding. Guys that are able to do that have all my respect."