At this stage, Real Madrid are remaining coy about their interest in Kane – president Perez claiming signing the Londoner has “never entered his head”.
However, the telltale signs of a Perez-led pursuit of a player are there to see: speculation about a future move in the Madrid-based newspapers, a public denial from a president keen not to upset a rival chairman from whom he has already snared two stars and flattering praise of the rumoured target from their coach – Zidane lauding Kane as a “complete” player.
“When you are in the middle of the season and already have important players for the team like Benzema, you cannot say you are interested in another player at another team because it can create a problem with your player and your team,” said Calderon, who resigned as Real president in January 2009. More information please click here.
“It also puts more pressure on the player you are trying to sign and the price could be increased if you publicly admit your interest.
“Saying you are interested is not the wisest thing to do during a season. But saying you are not interested does not mean anything.”
With complex big-money moves taking months, years even, to push over the line, Calderon suggests informal talks between the two clubs might already be taking place.
Calderon was at the heart of one of Madrid’s longest-running – and ultimately most successful – transfer pursuits when they targeted Ronaldo from Manchester United.
The 66-year-old says he was talking to Red Devils counterpart David Gill about the transfer for two years before the Portugal forward completed a world record £80m move in July 2009.
“I was talking to David for a long time and we knew the player wanted to come to Madrid,” he said.
“When he said ‘no, we are not selling now’ I said ‘OK’. Finally, in the case of Cristiano, we got the agreement, he got the agreement with Manchester United and it was done in the right way.
“But there are always friendly conversations between people running clubs – about if a player wants to come, if the club is willing to let them go, the price – that is normal conversation.”
Is Kane open to a Real move?
While Real Madrid appear to flirt with the idea of signing Kane, the player has responded with some gentle encouragement to his potential suitor – at the same time as being non-committal about leaving Spurs.
Last month, Kane said he would “never rule out” playing abroad, but then added in another interview he would “love” to be a one-club man.
Perhaps more tellingly, Kane spent time speaking to every member of the Spanish media after Spurs’ recent 1-1 draw at the Bernabeu. A charm offensive?
The Londoner signed a reported £100,000-a-week contract last year to keep him tied to Spurs until 2022, but former England defender Danny Mills says Kane’s future is not about money.
“Harry has got where he is today because he is ambitious and because he wants to improve,” BBC Radio 5 live analyst Mills said.
“He is going to want to win trophies and at the end of his career he wants to say ‘I won the Champions League and I won this amount of titles’. That’s the pull. That’s why he will leave.”
Another key factor is whether he would want to uproot his family – fiancee Kate and 10-month-old daughter Ivy – from their home in London if he were to move to a foreign club.
Bringing up a child in a country where you don’t speak the language, don’t have a home and don’t have your family around you to provide a support system is difficult. Ask Michael Owen.
The former England striker moved to Real Madrid from Liverpool in 2004, describing his off-field time in the Spanish capital as a “horror story”.
“I envisaged immediately having a lovely house, swimming pool, sitting out in the sun, and when I got back from training I would be playing with the two-year-old in the garden. We were not prepared for a long time in a hotel,” Owen said.
“Madrid did plenty to help us but they put us in a hotel for businessmen for five months; we had a lovely room, but it was not conducive to playing happy families.”
Calderon says the club would provide “all the support a player needs”, but Jenas believes adapting to Spanish culture could “rock Harry a little bit”.
“He strikes me as a bit of a home boy and being away from where he has been his whole life will be a shock to him,” the former England international said.
“I got dragged out of Nottingham when I was 18 and got sent to Newcastle, which was a culture shock for me at the time. There were not many black people in Newcastle at the time so even just small things like being able to get my hair cut – there was no Afro-Caribbean barber shop in Newcastle so I had to go back down to Nottingham to get my hair cut.
“It is little things like that, the comfort things that you go to, are gone, and you have to find a way to adjust.”