The 33-year-old, who has a special lifetime contract with the La Liga leaders, has been tipped to leave Camp Nou at the end of the season.
Iniesta has been linked with a number of Chinese Super League clubs, and the player himself has now confirmed that he will make his decision public imminently.
Speaking after Saturday's 5-0 win over Sevilla in the Copa del Rey final, the Spain legend told reporters: "This week I will make my decision public.
"What makes us happy are days like today. I really wanted today to go well and from the first minute, it did. It was a great night in all senses, on a team and personal level.
"This is a title that we love and we will try to add the league title to finish the season with a nice taste in the mouth. The team and the fans deserve a 10. There are a lot of emotions, a lot of feelings."
Iniesta has made 670 appearances for Barca, scoring 57 goals and registering 141 assists en route to 31 trophies along the club.