Chelsea goalkeeper Thibaut Courtois joined Real Madrid before the summer transfer window ended, greatly boosting Manchester Uniteds hopes of keeping David De Gea at Old Trafford.The Spanish international has been linked with a move to Real for many years, but it appears he will end any speculation about his future and with United.Real tried to sign De Gea immediately after he left AtletiThe 27-year-old joined the Reds from Atletico Madrid in 2011 and has gone on to make 316 appearances in all competitions, keeping an impre sive 118 clean sheets. De Gea has become one of the best goalkeepers in the world at United Vance Worley Jersey and was attracting a lot of interest as a result.Real could sign De Gea directly from Atletico Madrid given the two sides fierce rivalry, but they could procure his signature from the Red Devils a year later. And thats what they did in . Los Blancos tried to capitalise on De Geas early struggles in goal by positioning themselves as his saviour, but they werent succe sful.United were certain the Spaniard would improve and their faith in him paid big dividends. However, De Gea sought a move away in and came within a whisker of completing his dream switch to the Santiago Bernabu. De Gea signed a four-year-deal months later which will expire next summer.Real were still interested when his deal had a year remaining, but them signing Courtois now makes it highly unlikely De Gea will leave United. A contract extension is on the horizon and could see him extended his stay in Manchester to more than ten years.United cant be without De GeaThe former Atleti stopper has been Uniteds best player for many years. Hes saved them countle s times in games and has finally reached his potential. A regular for club and country and regarded among the top-five in the world, United couldnt replace De Gea without spending an extortionate amount of money. Thered be little value in selling him.Chelsea were in a similar situation as United, with their top goalkeeper having just 12 months remaining on his respective deal, but they opted to cash in as it became apparent the Belgian international wouldnt sign a contract extension. The opposite is true with United and could be confirmed sooner rather than later.For all the criticism over their lacklustre recruitment this summer, tying down De Gea to a long-term deal would be great busine s. Alexis Diaz Jersey