Wayne Rooney could miss derby with Manchester City with foot injury
The captain would be available for the clash at the Etihad Stadium on Sunday after serving his three-match ban for being sent off against West Ham United.
According to the Sun however, Rooney picked up a knock in training and has been heavily limping since.
There are also concerns that Phil Jones will be absent with shin splints, but manager Louis van Gaal expects Falcao to return.