The 24-year-old joins the Hammers on a three-and-a-half year deal for an undisclosed fee two years after spending a short spell on loan at the Boleyn Ground.
Hammers boss Alan Curbishley is pleased to have added some more fight to his frail defence. “Obviously we are delighted to have moved so quickly to sign Calum,”
“After Saturday we faced another set of problems with injuries to Danny Gabbidon and James Collins, so it was important that we brought someone in.” Curbs told the official site.
Upon hearing of the Hammers' interest,
“A lot has happened in my career since then and things have changed at West Ham, but it felt just the same when I walked in to the training ground this morning.
“The club's position has certainly not put me off, and I didn't hesitate when the opportunity came along. It's a fantastic club to be at, and now we all have to concentrate on pushing the team up the league.”