"I must say I admire him for what he has achieved," Johansson said of Blatter, though adding: "I can't understand him."
Blatter pledged to a UEFA audience in 2011 he would not seek office beyond the May 2015 ballot, when he will be aged 79.
"Whatever he does, I never get surprised," said Johansson. The Swede expects to be in Sao Paulo, Brazil, on June 11 when Blatter should confirm his re-election plans at FIFA's annual assembly.
Johansson compared the FIFA chief's staying power to Joao Havelange, who presided over world football from 1974-98. The Brazilian strongman then helped ensure his longtime general secretary Blatter won the succession battle.
"(Blatter) seems to me like he will be a new Havelange and he stayed until he was 96," Johansson said.
Havelange resigned from FIFA last year, seemingly to avoid being disciplined for taking millions of dollars in kickbacks from World Cup commercial deals.
In a new movie about FIFA's rise, "United Passions," Havelange and Blatter are portrayed by Sam Neill and Tim Roth, respectively. Gerard Depardieu plays French former FIFA president Jules Rimet who launched the World Cup in 1930.
Asked for observations on the movie project, Johansson smiled, rolled his eyes and declined comment.