I will express my personal opinion , other members opinions may vary
He is a good player who has athleticity and speed as his main points , i don't rate him as a very intelligent player or a player with a good tecnique . As for the assists with the current battery of strikers we have and with the type of game we play i doubt that he will have the same number of assists with us . He is no roberto carlos and he is a wing back , i wouldn't put him at lb because i don't consider him very good at defending he is strong , i have doubts about his positioning , would rather play chiellini or de cegli as a lb if we play with a 4 man backline .
He is definetly an upgrade and would be a good addition to the team , but not the best signing we can make .