The Northern Irishman had called the rookie "the next European star" after Friday's play, and he continued to be impressed by the Frenchman after they recorded a 5&4 win on Saturday.
The 35-year-old told Sky Sports News: "Victor's iron play over the last couple of days, I'm not sure I've seen better iron play consistently. It was stunning. I really can't say enough about the talent he is.
"The captain asked me to be a leader this week and I really wanted to embrace that role. I knew Victor was good but I didn't know he was this good. I've let this guy go. If he wins tomorrow I think you can really say he's arrived on the world stage."