Nemanja Vidic insists he will not be leaving Old Trafford in the summer, claiming there is no better club for him than Manchester United. Reports continue to circulate that the United defender is set to leave the Barclays Premier League champions at the end of the season, amid speculation that is wife is unhappy in England. Barcelona, Real Madrid and AC Milan are all thought to be keen on signing Vidic but he is focusing on next season with Sir Alex Ferguson's men. Tell me the club where I can go that is better than Manchester United? Vidic told the Daily Mirror. There aren't many clubs in the world where you can go to that are better. I'm happy here. United has been a big part in my development. Everything I have done here I respect. I will try and give my best on the pitch for as long as I can. I'm tired of speaking about my future. I give my best at United and always try to do that. I think that commitment shows how I think. I can't stop people speaking about my future but I have two years left on my contract and I'm happy. I need to think about next season, prepare myself, be focused and make sure I prevent injuries. United still have faint hopes of retaining their Premier League crown and will do so if they beat Stoke tomorrow and Wigan can get a result at Chelsea. However, Vidic believes their season should not be regarded as a failure if they end the campaign with only the the Carling Cup. In the last two weeks we didn't play well when we needed to, added the Serbia international. It's out of our hands now but we still hope. We must remember we have won the title in the last three years and been in the Champions League final twice. So we have had success. But to win the title four times in a row was always going to be difficult. We always knew that. This is life. You cannot win all the trophies all the time. You cannot be on the top every year. Even though we want to and have pushed very hard, sometimes you need to be strong, take those bad moments and learn from them.