The Italy international has been heavily linked with a move to Inter of late and his representative, Federico Pastorello, has admitted that the 25-year-old, who enjoyed a previous loan spell at Parma, would welcome a return to Serie A.
However, the agent is warning the Nerazzurri that Rossi will not come on the cheap and that they are likely to face stiff competition for the player's services.
"The reported €15m valuation is not right. It would need at least €20m," Pastorello told Paginegiallorosse.it.
"He is very attached to Villarreal, but has many offers - and not only from Italian clubs, also foreign clubs.
"He wants to test himself with the best players and win something, but playing the Champions League would not be an obsession for him.
"Returning to Italy would be ideal as he considers it his championship."
Pastorello also revealed that he has been trying to sell the idea of a move to the Italian capital.
"I have long spoken of Roma with Giuseppe," he revealed. "He really likes the philosophy of Luis Enrique. It warrants respect and they are a great team."
Rossi is currently recovering from a serious knee injury but it is hoped that he will return to action in time to play some part in his country's Euro 2012 campaign.
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