So armed with these statistics, do you think we have/could sign a player without seeing him play?
Scouting is an art, stats are the science.
I'm not sure one can exist without the other, at least in in my perception of our transfer system.
Comolli, when asked what exactly his position will involve at liverpool he said: 'obviously working with the sports science team and the doctor, working with the video analysts, working with the academy, working with the scouts, that's the area I will cover' I really think that the areas excluding the academy are those which are referred to during any potential transfer and are of equal importance.
For a better angle on the depth to which players are scouted here is another quote in to response to his success in spotting and nurturing young players: "It's the scouts doing lots of work on the ground watching many, many games and finding that information about the player: good background, bad background, good family, not good family, good at school, not good at school etc."
In continuation, I really think the following quote answers you question superbly well, it is in answer to a question on the profile of transfer targets, and his answer seems to expand past profile and more into the persona of the player:
"I had a long conversation with Kenny Dalglish about that. I just wanted to know what it takes to be a Liverpool player. I said 'you have been a player here' and obviously he's been a fantastic manager, and I said 'what did you like when you were a player in the changing room to see in other players, what did you like when you were a manager, what's the tradition here, what does it need to be successful at Liverpool Football Club'? I was talking more from a personal character personality aspect of the players."
A few excellent and relevant responses in his first ever interview, credit to the lfc.tv for asking such concise questions.
http://www.liverpoolfc.tv/news/latest-news/damien-comolli-first-interview