West Ham United manager Julen Lopetegui seems to be intent on signing a proven striker this summer. It was claimed earlier this summer that West Ham boss Julen Lopetegui was prioritising the addition of a new centre-forward. The Spaniard first moved to sign right winger Luis Guilherme – an 18-year-old from Brazil, but now he needs to bring some more proven quality to the London Stadium. Youssef En-Nesyri has been firmly on the Hammers’ radar this summer, and Sevilla are desperate to sell him before the end of the month in order to avoid financial sanctions. The Sevilla hitman has been linked w…