Álvaro Arbeloa played in some great defences but whether he knows how to coach one remains to be seen. ­Fulham have been fragile since appointing the Spaniard and they were fortunate not to be dragged into a penalty shootout by West Ham as this entertainingCarabao Cup tie drew to a close. West Ham equalised twice during the first half and they almost did it again after Oscar Bobb made it 3-2 in the 78th minute. Nuno Espírito Santo raged at a poor miss from Taty ­Castellanos, though, and Fulham…