“I am really happy and excited about joining West Ham United,” Maiga told the official site.
“I know West Ham are a big club in England and I’m really looking forward to representing them. They have huge tradition and it is like joining part of a family and that is one of the main reasons I wanted to come here.
“I know some of the big names that have played for the club in the past and I am proud to be part of a new team back in the Premier League.”