The Ukrainian has taken to social networking site Twitter to express his reaction after making the move. He wrote:
I’m ready for a new challenge ?? great club, wonderful fans, best league. Together to the top . You are together with me ? ?? pic.twitter.com/z7jpNMjr0P
— Andriy Yarmolenko (@Yarmolenko_9) July 11, 2018
Yarmolenko then underwent a medical at West Ham’s training camp in Switzerland earlier this week before completing the move.
He becomes Manuel Pellegrini’s fifth signing since taking over as West Ham manager.
The club have recruited Jack Wilshere (free), Ryan Fredericks (free), Lukasz Fabianski (£7m, Swansea) and Issa Diop (£22m, Toulouse) already.
Yarmolenko is a versatile forward who is a proven goalscorer. He would add great quality and depth to the Hammers squad.
West Ham fans took to Twitter to respond to his message and they have given him a warm welcome.
Welcome to the academy! Good luck…and enjoy it! ?⚒⚒⚒
— Eel weasles ⚒ (@SwealesLee) July 11, 2018
Can’t wait for you to get started! Welcome Andriy ⚒
— West Ham Yank (@TheWestHamYank) July 11, 2018
Better than salah
— Matt ⚒? (@MattLDN14) July 11, 2018
— AppalachianHammer ⚒⚒?????????⚒⚒ (@HammerThames) July 11, 2018
Welcome to West Ham Andriy if you give it your all us fans we love you. Best fans in England ⚒⚒
— Frank (@frankieleach91) July 11, 2018