Rangers had been linked with the 24-year-old for the majority of the window, with Walker a life-long supporter of the Ibrox club.
However, despite Walker entering the final year of his Jambos contract, Rangers couldn’t agree a fee with Hearts.
And while it’s expected that Walker will sign a pre-contract with Caixinha’s side in January, the Portuguese refused the notion that he was “disappointed” over the deal.
Speaking during this afternoon’s press-conference, Caixinha said, “No, I’m not disappointed on that. I was only disappointed if I wasn’t able to have coverage on all the positions….
“I have the best squad and the best players so I am happy.”
Caixinha was speaking ahead of this weekend’s game, with Rangers set to host Dundee, as the Scottish Premiership gets back underway following the international break.