Raul Jimenez has refused to commit to a £30 million ($38m) permanent Wolves move, despite impressing during his loan spell from Benfica.
The 27-year-old has racked up four goals and four assists in 16 Premier League appearances for the newly promoted side, including an effort against Chelsea which helped Wolves to seal a dramatic 2-1 win.
Wanderers are aiming to secure his services with a long-term deal, but the Mexican is coy over his future with the West Midlands club.
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Speaking to the Mirror, Jimenez ruled out a move in January, saying: "It's too early.