The Baggies' manager is happy with the Argentine's impressive first start for the club against Liverpool and feels the 25-year-old has settled well into life in England
The midfielder, along with Youssuf Mulumbu, dominated the midfield against England skipper Steven Gerrard, Lucas and the Reds' £15 million summer signing Joe Allen.
Clarke feels the Argentine is adapting to life and playing football in England well and is hoping to see more from the 25-year-old in the future.
"He's settling in very well," Clarke told the club's official website.
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"The Argentinians have a great mentality. They're a strong nation and the players tend to settle in well.
"It's a similar game - a tough, physical league over there. He and Youssouf Mulumbu were really good at the weekend.
"I think he's shown in training and the games that he's played that he is what we thought we'd get - he's an Argentinian No.5, who breaks up play and keeps the ball for his team.
"That's the characteristics for that position and it's what he's done."