The Reds' first game after the season's second international break is a mouth-watering lunchtime encounter at Stamford Bridge (kick-off 12:30 BST).
Five players – Diogo Dalot, Marouane Fellaini, Nemanja Matic, Scott McTominay and Luke Shaw – suffered injury problems during the break, while Jesse Lingard, Herrera and Marcos Rojo have all missed recent matches for United.
Speaking to MUTV’s Mark Sullivan before his pre-match press conference at the Aon Training Complex on Friday, the boss suggested that midfielder Herrera will return to the squad against the Blues, after struggling with an ankle injury recently.
“The squad shape is that everybody available is selected,” he said.