The 29-year-old joined the Hammers on transfer deadline day.
“I am extremely happy to be here and I hope to play as soon as possible. I look forward to the challenge,” Ilan told Sky Sports News.
“It was an easy decision to come here. It is one of the biggest leagues in the world.
“My aim is to the best I can and score goals. I want to start with a bang.
“I am delighted to be here and I am looking forward to enjoying a long-term relationship with West Ham.”