Tottenham's Kane, 25, has gone six games without an international goal.

But, asked whether any England players would flourish in Spain, Ramos replied: "Harry Kane is physically a fantastic striker but also technically.

"He can surprise you - but not me as we have prepared for him."

Spain are in pole position in their Nations League group after back-to-back victories - including beating England 2-1 at Wembley last month.

But Ramos, who is set to win his 160th cap, has been impressed by the Three Lions, who finished fourth at the World Cup in Russia.

"There are always very technical players in the England team that are dangerous but I can assure you we have been watching them," said the 32-year-old Real Madrid defender.

"We know the level of difficulty will be very high. We know we have a fantastic national team in front of us, and even though we played a great game at Wembley there are things we can improve.

"England had a fantastic World Cup. They have a lot of personality despite being very young, and offensively they are very dangerous.

"Harry Kane is a very good player. We have to keep his scoring drought going because that will be a good sign for us."

After England's 0-0 draw with Croatia on Friday, Kane dismissed suggestions he needs a rest, saying he does not think his "game has dipped".

While Ramos praised Kane, Spain coach Luis Enrique declared his admiration for England counterpart Gareth Southgate.

"I really like Gareth Southgate as a manager," he said. "Maybe historically England haven't always been playing possession football but Southgate likes to play with possession and he is someone I have always followed with curiosity.

"I really like the way he interprets football. I hope he won't be lucky against us but I wish him luck every game after that."