The United States midfielder, 28, is due to return to Los Angeles Galaxy next month following a loan spell.
Following his arrival last month Everton have become the Barclays Premier League's form side with victories over Chelsea and Manchester United.
American idol: Almost 4,000 Everton fans have joined a Facebook group to keep USA midfielder Landon Donovan at the Goodison Park for the rest of the season
Donovan is expected to play a key role when the Toffees face Sporting Lisbon on Thursday in the Europa League holding a 2-1 advantage.
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