West Ham have completed the permanent signing of midfielder Tomas Soucek from Slavia Prague.

The 25-year-old Czech Republic international has played a key role in helping the Hammers avoid relegation since joining on loan in January.

West Ham had the option to make the move permanent if they stayed up. And Soucek has now agreed a four-year contract for a fee understood to be £18million.

Manager David Moyes said: “I always believed he would be signing. It was subject to us staying in the Premier League and I believed we would remain a Premier League club so I never had any great worries about him.

“The biggest concern was how he would start and fit in with the Premier League quickly. All the other things connected to him are good.

“He can score, he can run, he’s a good footballer. I think it was more to see how he would fit in.