DEL BOSQUE DEMANDS Concentrate Spain coach Vicente del Bosque has warned his players not to “switch off” in their Euro 2012 qualifier against the Czech Republic on Friday. The world and European champions leading Group I with three wins from their 1st three games, but Del Bosque feels Michal Bilek’s aspect pose a key challenge. Carlos Tévez in a race to be fit for Manchester City’s next Premier League match versus Sunderland Manchester City’s Carlos Tévez would have risked lacking relaxation of period had he played versus Chelsea. Berra: Dimi feel I’ll be daunted by Brazilians CHRISTOPHE BERRA harbours