Manchester United will be forced to add in the January transfer window, says Lou Macari, with injuries to the likes of Paul Pogba and Anthony Martial highlighting a lack of squad depth.
The Red Devils, on the back of a sixth-place finish in 2018-19, were expected to be busy over the summer.
Big-money deals were done, including the £80 million ($100m) record-breaking acquisition of Harry Maguire from Leicester.
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United did, however, only bring in three senior stars while seeing the likes of Ander Herrera, Antonio Valencia, Alexis Sanchez, Romelu Lukaku and Chris Smalling depart.