The Romanian captain was Sam Allardyce's first signing of the summer when he penned a one-year deal after moving from Ukranian champions Shakhtar Donetsk and he is looking forward to playing for the Hammers.
He is targeting a full debut against Cardiff at home on the opening day of the season on August 17.
"First of all I am very happy to wear a West Ham United kit," he told West Ham TV.
"For me it's an honour to wear this shirt and to play in the Premier League. I will be very proud to wear the claret and blue colours and I hope to satisfy the fans.
"I'll be very excited when I pull on the kt for the first time, because it will be my first game here."