Eight-time Olympic gold medallist Usain Bolt has already announced he plans to retire. He confirmed on Wednesday that he will compete in the 100 metres and 4x100m relay race at the IAAF World Championships here next month. His final event before retiring. The 100 meters and 200 meters world record holder partied with his devoted fans in an emotional farewell at the National Stadium on June 10 as he ran his final race on Jamaican soil clocking 10.03 seconds to win the 'Salute a Legend' 100m. Bolt said during a press conference in Monaco ahead of Friday’s Diamond League meeting: "My aim is to win in London. I want to retire on a winning note." The 30-year-old multiple Olympic and world champion is expected to participate in the World Championships scheduled to take place from August 4 to August 13 at the London Stadium. The Jamaican superstar will participate in the men's 100m final is due to place on August 5 and also in the men's 4x100m relay which will takes place on the following Saturday. Jamaican superstar revealed he will not participate in the 200m event meaning he will not defend his title 200m world title and race against South Africa athlete Wayde van Niekerk whom Usain Bolt believes will take over from him as the next track and field superstar when he finally retires. “I think that’s one of the most disappointing things in my career now,” said Bolt. “He came along at this late stage and I didn’t get to compete against him, because I think he’s one of the best now. I’m never afraid, I live for competition. But for me it’s too late now, I’m at the end of my career. We’ll never know what could happen.” Bolt who already competed in in Kingston and Ostrava this season will make his third race of the season by competing in the 100m in the Diamond League in Monaco on Friday. “I’m feeling good, the season started off slow for me. I had a setback after my friend Germaine (Mason) passed away, l’ve been a little behind schedule, but I am training well. I’m feeling much better over the past couple of days. Usain Bolt career glory suffered a setback after his Jamaican team-mate Nesta Carter, who was part of the quartet that won the 4x100m in Beijing, tested positive for a banned substance. His 'triple triple' of nine gold medals has been downgraded to eight. Bolt, a passionate Manchester United fan, who had earlier expressed his desire to play for the Red Devils seems to be going down on the decision considering the level of commitment that will take from him, he said his ambition of playing professional football was no longer a priority. Bolt added: “I really stressed that point too much… We’ve been looking into it and I’m really thinking about if I really want to go back into doing so much work right now, I haven’t totally given up on it but it’s something that I’m not really stressed about right now.” Bolt has won the 100m, 200m and 4x100m gold at the past three Olympic Games. What do you think of Usain Bolt illustrious career and the announced retirement? Have a say, drop your comments below.