straight to your inbox every day for freePaul Pogba has challenged his Manchester United teammates to keep their winning mentality going ahead of a crucial week.Despite an atrocious first-half performance in which they went a goal down, United managed to come back to defeat West Ham 3-1 on Saturday to continue their impressive streak of victories away from home.The win will be a massive boost for United ahead of what could be a crucial week in the story of their season.Ole Gunnar Solskjaer's