Gosling had only been on the field a few minutes after coming on as an 83rd-minute substitution for Leon Osman when he collided with Hahnemann while attempting to score a winner in the 0-0 draw at Molineux.
The England Under-21 international has scored three goals in 17-first-team appearances for the Toffees this season.
Everton have been hampered by injuries throughout the campaign with Mikel Arteta, Phil Jagielka and Victor Anichebe only recently returned from long-term lay-offs.
Phil Neville, Tony Hibbert, Joseph Yobo and Leon Osman have all endured lengthy spells on the sidelines this season as well.
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