By Tom Gott West Ham United have confirmed the signing of winger Crysencio Summerville from Leeds United. The Dutch forward enjoyed a stellar season in the Championship last year, racking up 19 goals and nine assists, and found his name linked with the likes of Chelsea and Liverpool earlier this summer. However, it’s West Ham who have won the race for his signature, striking a deal worth over £25m and tying the 22-year-old down to a five-year contract which also includes the option for a further 12 months. “I’m very happy, and I can’t wait to get started,” Summerville told club media. “It’s th…