He will now link up with the Hammers on a two-year deal with an option for a third after impressing during a successful trial period at the end of the 2012/13 campaign.
Allardyce said: "He was recommend by Didi Hamann - who managed Stockport - as he felt he was an emerging talent that needed nurturing. I asked their current manager Ian Bogie about his talents and he allowed us to take a look at him last season and like every young player he's got talent.
"He's very capable of handling the ball and he's able to create with his passing. He's very slight, which we'll work on, but the question is can we create that potential into a Premier League player? It is something we'll find out over the coming years through our Academy system and we'll see if he can join the long list of players that have come through."