The former England captain has been left out of Sir Alex Ferguson's teams in recent times but has been confirmed as a starter for tomorrow night's Old Trafford meeting with Romanian club Otelul Galati, stepping in for the suspended Nemanja Vidic.
"Obviously Vidic's performance on Saturday [against Everton] was excellent. He was a bit unfortunate with the sending off in Romania. I can understand the referee's decision because his foot was high," Ferguson said.
"It was a little bit high and it's unfortunate for us that he's missing tomorrow. Rio steps in and will play tomorrow, there's no problem with that."