The entire interview appears at

https://www.youtube.com/watch?v=cA76iHWw8BA

and begins at 8:32.

The Cardinal denies saying the Holy Father approved his proposal:

ARROYO: But you do understand, when a Churchman like yourself, a theologian, an esteemed international figure, a Curial official says: “Here is my proposal, and the Pope agrees with me” that does cause some …

CARDINAL KASPER: Well, this I did not say.  

 ARROYO: Well you did say, and the quote is: “Clearly this is what he wants,” and the Pope has approved of my proposal. Those were the quotes from the time …

CARDINAL KASPER:  No … he did not approve my proposal. The Pope wanted that I put the question [forward], and, afterwards, in a general way, before all the cardinals, he expressed his satisfaction with my talk. But not the end, not in the … I wouldn’t say he approved the proposal, no, no, no.