Manchester United fullback Patrice Evra has been hit by a virus.

Evra is doubtful for Manchester United's Champions League tie against Benfica after coming down with a virus.

The left back was substituted in the 51st minute of the 1-0 win at Swansea on Saturday and will be assessed before the Group C clash at Old Trafford.

If Evra fails to recover, then Fabio da Silva, who replaced the 30-year-old Frenchman against Swansea, could deputise.