"I didn't know Gray before our friendly with Birmingham. He played so well and we wanted him from that moment.
"He is young, he's got good quality and he can grow a lot with us.
"He can play as a winger, he's fast and has good skills. One-on-one he's good. He's perfect for us
"He's able to play Sunday. The league's our priority but we think about the cup. I think about the players who haven't played."