Graham Potter says he is looking forward to a "big challenge" after being confirmed as the new West Ham manager.
The 49-year-old has signed a two-and-a-half-year contract with the London club, who sacked Julen Lopetegui on Wednesday after six months in charge.
"It's a proud day to be head coach of this amazing club, big tradition, big history, big expectations, big challenge," Potter said.
"I'm really excited, it's a bit like Christmas – Christmas for the adults. Excited, not the best of sleeps last night just from excitement.
"I'm looking forward to meeting the players today, meeting our supporters and getting going.