The Utd philosophy under Ferguson was clear, 442 or a variation of it, direct pacy wingers, move the ball quick, stretch play, fullbacks like Neville, Irwin, Evra getting forward etc. One of the most clear philosophies in PL history. Tried to change it with a signing like Veron but didn’t work out. Chelsea change managers so often that there is no one philosophy. Lampard will change that if he gets the job and time.