The 22-year-old has one year left on his contract with Shakhtar and has recently been linked with the likes of Chelsea and Barcelona.
“Willian would be perfect for Arsenal,” said Denilson.
“I know him well from the Brazil youth team and he had a real winning mentality then.
“I’ve heard Chelsea are interested, but his character could improve our team and his style would fit much better at Arsenal.
“We need match-winners at Arsenal and knowing what he does for Shakhtar and the national team I know he could do the same in England.
“He has great vision and ability and is one of the best creative players I have played with.
“I’ve spoken to him and told him that he could be a success with us.”
