"I hope it will be a partnership to make history. We have everything for that to happen and it's an honour, a dream come true, to play alongside the best in the world and that is what persuaded me choose Barcelona," the Brazil star said.
Neymar will begin training with his new team-mates July 25 after being given extra time off following Brazil's Confederations Cup triumph. He admitted to have mixed emotions about leaving Brazil.
"I had a great story with Santos but now I have a new club, a new life and everything is focused on Barcelona." he added.