Chicago Fire are now 7th in MLS' Eastern Conference - a point off of the playoff spots - and Torres would be another big-name addition to the North American league after Wayne Rooney recently joined relegation-threatened DC United.
The World Cup victor had been linked with moves to the A-League and MLS but - like Iniesta at Vissel Kobe - the next stage of his career will be in Japan.
"Sagan Tosu were one of the first clubs to show an interest in me". How long will depend on my sporting performance.
Townsend said he and deputy A-League chief Tracey Scott had offered to fly for a face-to-face meeting with Torres, which was turned down because he was on a family holiday in the Caribbean.
"I've had offers from France, Germany, even some options from Spain, but at no time did it go through my head to go to a European team, I wanted a new challenge in a totally different place".
Both players might be fighting for different objectives, as Iniesta's new team are now in sixth place, while Torres' club are 17th out of 18.
The Spaniard had been linked with moves to both the United States and Australia, but at a press conference on Tuesday morning he revealed he will instead head to Asia.
I would love that one but I think he still think about money?
Sagan Tosu president Minoru Takehara was present at the announcement, posing with Torres as he held the No. 9 shirt he he will wear next season.
Torres, who spent the bulk of his career with boyhood club Atletico across two spells, has also played for Liverpool, Chelsea and AC Milan and won the World Cup and two European Championship titles with Spain.