It's definitely in the debate for best ever window! A couple of tough competitors below.
05/06
Vidic, Evra, Park, VDS, Ben Foster!
07/08
Anderson, Nani, Hargreaves, Tevez, Kuszczak!, Possebon, Manucho. Last 2 didn't achieve much, but exciting anyway.
12/13
Van Persie, Kagawa, Zaha, Powell, Henriquez, Buttner. Most didn't amount to much, but still exciting talent at the time
14/15
Di Maria, Shaw, Herrera, Rojo, Blind, Falcao, Vanja Milinković-Savić!
16/17
Pogba, Mkhitaryan, Zlatan, Bailly
13/14
Mata, Fellaini
Ha ha just kidding!