Alexis Sanchez is a great player but is wasted playing on the left wing at Manchester United. He is experienced on the right, has played very well there at Udinese, Barcelona and Arsenal (please see http://dailycannon.com/2016/03/alexis-sanchez-liberated-by-the-right-wing/ for a discussion of this) and needs to be part of a quick front 3.

Him playing there will also allow Anthony Martial to play on the left in a 4-3-3 as well as, at times, for Marcus Rashford to play as a Number 10 in a 4-2-3-1 alongwith Lukaku.  This will be like in 2008 when Rooney, Berbatov, Tevez and Ronaldo devastated Europe.