Can only assume you watched him on and off last season and in the first game of this season away at Man City. But not seen him play since.
He's one of our best players, great engine, strong in the tackle and never say die attitude.
Last season he was poor, but he came from a different country (halfway through the season) and in to a team fighting relegation. He's just a player that's taken 6 months to settle in. Don't think I'd swap him for another right back in the league bar maybe Zabaleta.
Santon is a different story though, not bad going forward but very suspect defensively. So if you attack down our left that's where you'd get more joy.
Cheers, I'll let the gaffer know