Antonio Valencia is currently on the sideline with a broken arm .
Mourinho is far from convinced by Matteo Darmian , who recently expressed confusion over the Portuguese 's reluctance to select him in the United XI .
Antonio Valencia is currently on the sideline with a broken arm , and Mourinho is far from convinced by Matteo Darmian , who recently expressed confusion over the Portuguese 's reluctance to select him in the United XI .