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 “marvelously well” following surgery in February. “I'm suffering but I'm making progress,” he said. The three-time FIFA player of the year ruptured a tendon in his left knee in an Italian league match in February. He has been without a club since his contract with AC Milan expired in June. “In two or three months time, I think I will be back into competition,” said Ronaldo, who is using Flamengo's facilities in Rio de Janeiro to complete his recovery. He claimed there is a “great possibility” he will join English Premier League side Manchester City, which is now flush with cash following a takeover by an Abu Dhabi-based company. “Manchester City are putting together an incredible project with great players,” he added. “It's a long-term project that could have immediate results because City want to shake the hierarchy of world football,” said Ronaldo, who ruptured a tendon in his left knee playing for AC Milan in February. “We are talking (with Manchester City) at the moment. We shall see.” City confirmed this week it had spoken to Ronaldo and his representatives but would not be looking to sign the player. He mentioned a move to France, in particular to Paris St. Germain, as another possibility. “I have never played in France but I'd love to,” he said. “I love Paris. I have a flat there and I often go there. PSG are currently building a nice project. They have recruited good players and have built a team capable of winning the title.” Ronaldo was photographed visibly overweight while vacationing in Ibiza recently. US investor joins Arsenal board American businessman Stan Kroenke has joined the board of Arsenal. The Premier League club says the Denver-based investor has become a non-executive director and holds a 12.4 percent share in the London side. The move seems intended to block a potential takeover of Arsenal by Russian billionaire Alisher Usmanov, who has a stake of more than 24 percent in the club. Friday's announcement came on the same day that Arsenal reported a pre-tax profit of $66 million for the year ending May 2008. England skips tourney Ireland, Northern Ireland, Scotland and Wales - but not England - announced Thursday that their national sides would take part in a new ‘Four Associations' tournament in 2011. The event will be staged in Dublin, with the initial two matches in February and four other fixtures following in May. Whichever side tops the league table will win the Four Associations Cup.