The 35-year-old has gone under the knife in America to repair ligament damage suffered in Manchester United's Europa League win over Anderlecht last month and Raiola has confirmed that the injury has not ended the striker's career.
"Zlatan Ibrahimovic has undergone successful knee surgery. He will make a full recovery AND HAS NOT SUFFERED A CAREER-ENDING INJURY," Raiola said in a statement.
"The procedure was performed by Freddie Fu, M.D., and Volker Musahl, M.D., of the UPMC Sports Medicine program in Pittsburgh.
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"Zlatan has started rehabilitation at UPMC and will remain under the care of Dr.Fu and Dr.Musahl throughout his recovery.
"Zlatan and the medical team are not available for interviews at this time. Additional updates will follow at a later date."
Ibrahimovic is expected to be out for the rest of the year and his future at Old Trafford hangs in the balance, with his contract expiring in the summer.
The veteran has been a success in his first taste of English football, scoring 28 goals in 46 appearances before injury struck.
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