The striker, who has been with Sevilla for four seasons, is eager to test himself against Europe’s finest but will not be able to do so if he stays with the Andalusian club, which finished ninth in La Liga.
“He said he wants to develop and that he wants to play in the Champions League,” del Nido told Sevilla's club video channel. "One of the (interested) teams is Atletico Madrid and the other is outside of Spain. Sevilla will choose the best offer.”
The Spain international, who missed out on a place on the country's Confederations Cup squad to Valencia's Roberto Soldado, scored 25 goals in 36 La Liga games for Sevilla in 2012-13.
Negredo was the fourth highest scorer of the Liga season, behind only Lionel Messi, Cristiano Ronaldo and Radamel Falcao.
“An operation of this kind has three legs: Sevilla, the club that wants to buy, and the player. Do not forget that the will of the player is very important to decide," del Nido said. “In this case, the player wants to go. In this way we are kind of forced to negotiate.”
Del Nido says when picking a team, the club will look for “the one who gives more money or security, or less money but offers more guarantees.”
Sevilla has been in a situation like this before with Dani Alves. The defender did not leave on good terms with the club after being bought by Barcelona for 41.5 million euros.
“One of the greatest footballers in the history of Sevilla reached refusing to play a competitive game because he wanted to sign for another club," del Nido said. "his is something we assess at the time of a transaction.”
Negredo has three years left on his current contract but would be another star to leave the club this summer following the departure of Jesus Navas to Manchester City and Luis Alberto to Liverpool.