sai is a foundation member who works for danzo currently sai is in team kakashi, and sai did not try to kill naruto he was testing his strength according to sai

http://naruto.wikia.com/wiki/Sai

Sai is no match for naruto because naruto has resagan and he has the nine-tailed fox in him. naruto can make multi clones and that takes a lot of work. naruto can turn himself into Sai by using his clone justu. So Naruto is way stronger then SAI . Sai thinks hes better than naruto but he is weak

No.

Sai holds it in his pocket.