Kepa said: “I am confident that my style of play can fit into the Premiership, and I am excited by the prospect of playing against the best teams in England.
“But first I must simply try to win a place in the team and help us out of the position we are in.”
He told the club’s website, whufc.com: “I do not know too much about West Ham – but historically they are a very strong team and, although the position at the moment is not good, I believe that we can return to that level soon.
“I am looking forward to the challenge.”
