Blackburn reportedly failed in a bid to land the 20-year-old on loan, with City keen to sell the Sweden international.
Guidetti spent last season on loan at Feyenoord, scoring 20 goals in 23 appearances to become one of the hottest properties in the Eredivisie.
"He liked his stay at Feyenoord and enjoyed putting in strong performances for them," Guidetti's agent Per Jonsson told Voetbal International.
"Joining them again is definitely an option, but there are more possibilities.
"We are going to explore all options without rushing and we will surely come to a decision before the transfer window ends at the end of the month.
"We will soon conduct talks with Manchester City and see what is best for John."