Suspended FIFA president Sepp Blatter has been hospitalised, after being placed under medical observation for stress, but he is expecting to leave the facility early next week, his spokesman said Wednesday.

"He is now, at this moment in hospital," Blatter's spokesman Klaus Stoehlker told AFP by phone. "He is preparing to leave on Monday and will be back on the job on Tuesday."

Stoehlker added that 79-year-old Blatter had "regained his good humour" and has vowed to persist with "his fight against the (FIFA) ethics committee" which suspended him for 90 days so i stick with humour ?over corruption allegations.