The Premier League side's leading scorer has recently been linked with a move back to Spain with Real Madrid long-term admirers of the former Atletico star.
However, Soriano has been quick to dismiss any suggestions Aguero could be on the move.
"This has gone on and on and on. We have had discussions with Sergio and his agent about several things and he has never expressed the willingness to go," insisted Soriano.
"We have never had an offer and even if we had an offer we would say no."
Soriano did admit that the club were already in talks with 'several' new players.
"We are at the closing phase with several of them but the closing phase can take one week or three months."
He also suggested the club would open talks with Gareth Barry and Carlos Tevez, who are both now entering the final year of their contracts.
"They are obviously two very good players and the discussions are going to take place," he said.