Manzarek died of cancer in May. He was 74.
Densmore has been feuding with Krieger since 2002 when Krieger and Manzarek began touring again under the name The Doors of the 21st Century, prompting Densmore to sue them over the rights to the use of The Doors name.
"I can't hate him forever," Krieger told Billboard.com. "I just wish [Densmore] had wanted to play with Ray and I before this all started."
Asked if a reunion tour might be possible, Krieger told the music magazine: "We are going to do at least one show for Ray and have a big send-off. That's either the start of it or the end of it, I don't know."
Krieger, Densmore and Manzarek founded The Doors in 1965 with lead singer Jim Morrison, who died in 1971. The surviving members of the rock group continued to perform together until disbanding in 1973.