Suddenly, it was being reported that they were interested in the one player their city rivals appear keen on the most. Just out of the blue, it seems they will usurp their rival to this talent, which will not only improve their team on the pitch, but also send a message across town who still remains the boss.This is the story of Manchester United and Alexis Sanchez. Are the Red Devils truly interested in him or is this some kind of ploy by the player’s representatives to get as much as they could get from Manchester City? We may never know.But what we do know, is how important signing Sanchez would be for United. Up until a few days ago, it had looked certain City were signing the Chilean, but if reports are to be believed, Pep Guardiola’s side is unwilling to match Arsenal’s £35million valuation for a player who is out of contract at the end of the season. One is tempted to believe Sanchez would already be a City player if not for all these.Meanwhile, United are believed to be ready to pay what Arsenal wants, and are also willing to add a sweetener: Henrikh Mkhitaryan – that is of course, if we are to believe what the media in England has been reporting for the last few days.Be that as it may, let’s look for a second, what the addition of a player like Sanchez will do for Manchester United. The Red Devils, while not exactly being in the worst possible form, have also not been spectacular for most part of the season, after a splendid start to the campaign.Last summer, Jose Mourinho did not hide his desire to acquire a winger, with Inter Milan’s Ivan Perisic strongly linked, and in some ways, the Portuguese has suggested he still requires a proper winger in his team, and while Sanchez has played in several positions over the years at Arsenal, he will be an upgrade to whatever United have on the wings at the moment.The quoted £35million fee also appear not to be a problem, too, as United still remain capable of splashing the cash where and when necessary. What will come as a disappointment to the Red’s faithful, however, will be the reported exchange of Mkhitaryan in the deal that will supposedly bring Sanchez to Old Trafford.The Armenian remains a popular figure among the fans despite having slowed from his impressive start to the season and sending him off to a rival will be a sore spot for United fans, even if bringing in Sanchez will appear a more important move at the moment.But then, with Juan Mata, Jesse Lingard and Paul Pogba available, it is apparent that the Red Devils have quite the personnel to cover for any loophole the sale of Mkhitaryan might bring, but do they have better options in those wide areas?The money to splash is not the problem and Sanchez will prove a great addition to United, but won’t the lure of reuniting with Guardiola prove too strong for anything Mourinho could offer?