Manchester United's recent results may have caused some concern with Ruben Amorim as he looks to the January transfer window in just a couple of weeks' time. United looked vulnerable at the back in their 4-3 defeat to Tottenham in the Carabao Cup quarter-finals, which saw them go 3-0 down just after the second half began, and Amorim will have identified a few areas he wants to strengthen. The team already appear light at left-back and may need more depth in attack if players like Marcus