Ronaldo says he plans to make his comeback from a career-threatening knee injury in two to three months, possibly with Manchester City.The 31-year-old Brazilian striker said in the French sports daily L'Equipe on Friday that he faces a "difficult challenge" but his knee is doing "marvellously well" following surgery in February."I'm suffering but I'm making progress," he said. Source: Ronaldo plans to return in 2-3 months
