Wales assistant coach Rob Howley has described Sam Burgess as "an imposing figure" ahead of the World Cup showdown against England on Saturday.
The host nation are set to reveal a reshaped midfield of Owen Farrell, Burgess and Brad Barritt for the crunch Pool A tie at Twickenham.
Burgess is set to start despite having just 112 minutes of Test rugby union experience under his belt. However, Howley said he has been impressed with the former rugby league star.
"Andy Farrell [England assistant coach] introduced me to him [Burgess] on the Lions tour in 2013. He's an imposing figure," Howley said.
"I was impressed when he played with [Henry] Slade against France [last month]. His ability to run hard lines and having that creative edge outside makes it more difficult defensively.
"It is important when playing against players like Sam to close down their space. It will be a challenge if Sam is playing at 12 at the weekend."
Asked to assess the difference between Farrell and the man he is set to replace, George Ford, Howley added: "George has been immense for England, with his ability to play ball in hand.
"Owen is great with ball in hand, his running threat and his kicking is very good. He likes pressurised games.
"It's nice to have that choice, and I am sure Stuart Lancaster and his coaching team will get that right."
Prop Paul James is Wales' biggest fitness concern heading into the match after he suffered a tight calf muscle during last weekend's 54-9 victory over Uruguay, as did regular starting tighthead Samson Lee.