The Nigerian centre-forward was handed a place in the starting XI for the first time since United's resumption earlier this month, when included in the line-up for the Emirates FA Cup clash at Norwich City last Saturday.
He responded by scoring the opening goal, forcing a red-card challenge from Timm Klose and playing a part in the build-up to Harry Magure's dramatic extra-time winner.
When Ighalo leads the line from the first whistle, he has guaranteed goals, with five of them coming in just four full appearances, ensuring he is only the second man in the club's illustrious history to find the net in each of his first four starts.