By Toby Cudworth Manchester United’s 3-0 win over West Ham United on Sunday was filled with positives. Rasmus Hojlund found the back of the net for the fourth time in five Premier League games – he’d previously gone 14 without a goal – and Alejandro Garnacho netted a brace to continue his fine run of form on the right wing. But such is life at Old Trafford right now, manager Erik ten Hag can never fully have things his own way. Just three games into his Premier League return, Lisandro Martinez was on the deck clutching his knee once more, sparking fears he’d picked another serious injury. And …