Hodgson agreed a £3million deal for the 30-year-old Gabon striker but rules stipulate players cannot appear for three different clubs in the same season.
Cousin played just 20 minutes of a French league match before joining Rangers from Lens in August, which Hodgson argues is a harsh ruling, adding: "I´m still hopeful he can come here this season. I don´t think the door is closed. All the time the door is ajar, we´ve got to hope it can be open fully."
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