We're looking fine at the back. Jones, Smalling, Evans, Michael Keane, Blackett, Rojo and Blind (assuming we sign him that is) will all bedfine for the three central defensive positions. Rafael, Shaw, Di Maria, Blind, Young, Valencia and James will do for wing backs.
Where we need another player added is in midfield, although it's looking like we're going to rely on Blind, Rojo, Herrera, Fletcher and Carrick to cover our defensive midfielder options until January when we can get Strootman in as the number one choice.
Not too sure where Falcao is going to fit tbh, although I don't think that Van Persil is 100% yet so we could see him start up front with the Roonster in a couple of weeks, maybe..?