The 20-year-old midfielder has attracted attention from a host of clubs across Europe, after a series of impressive performances in Serie 'A' this season.
Italian rivals Napoli were believed to be monitoring the Spaniard's situation with a view to making a summer bid, but Obiang's representative, Jose Miguel Gonzalez, has played down suggestions he could join the Azzurri.
"There are only rumours about him," he told calciomercato.it. "There was nothing with Napoli, we have not had any meetings and, as far as I know, Sampdoria have not received any concrete offers from any club.
"I know that many teams, including English ones, are interested in the player but he is very good in Genoa and he's happy."
Spurs boss Andre Villas-Boas is reportedly keen to bring Obiang to White Hart Lane, but could face competition for the player's signature from the likes of Chelsea and Manchester City.
Roberto Mancini has numerous links back in his native Italy, and might look to utilise them in a bid to lure the Sampdoria star to the Etihad Stadium, while Stamford Bridge owner Roman Abramovich continues to be linked with almost every young, up and coming European talent.
However, any potential suitor of Obiang's will have to pay the price for his services, after he recently penned a new contract at the Stadio Luigi Ferraris until 2017.
"We have extended the contract for another season and now he has a four-year contract with Sampdoria," Gonzalez confirmed. "We'll see what happens in the summer."