Milan striker Ronaldo is recovering well after knee surgery, according to one of his doctors at a Paris hospital.

Brazil legend Ronaldo, 31, ruptured a left knee tendon against Livorno in Serie A recently and underwent an operation last week amid fears for his career.

"He is recovering well and there is no sign of inflamation," Yves Catonne told French sports daily L'Equipe.

"I don't think he wants to quit. I felt he was decided to work and motivated to go on.

"His return will be a real challenge though because he won't be able to play for eight or nine months."

Ronaldo has missed large chunks of his career through serious injury in the past, most notably during his spell at Milan's city rivals Internazionale.

Milan face Arsenal at the Emirates Stadium on Wednesday evening in the first leg of their last 16 Champions League clash.

Reuters