The Pacers picked up Walker's third-year option for 2025-26 on Friday, Brett Siegel of ClutchPoints.com reports.
Walker is not in the starting lineup for Thursday's preseason matchup against the Hornets.
Walker will start Monday's preseason game against the Grizzlies.
Walker provided five points (2-4 FG, 1-2 FT), one rebound, two assists and one steal over nine minutes during Sunday's 121-89 victory over the Knicks in Game 4 of the Eastern Conference Semifinals.
Walker notched eight points (3-3 FG, 2-2 3Pt), seven assists, four rebounds and one steal across 29 minutes in Monday's 133-116 victory over the Clippers.
Walker finished Wednesday's 132-129 overtime loss to the Bulls with 10 points (3-5 FG, 2-4 3Pt, 2-2 FT) and four rebounds over 24 minutes.
The Pacers recalled Walker from the G League's Indiana Mad Ants on Wednesday.
Indiana recalled Walker from the G League's Indiana Mad Ants on Tuesday.
Indiana recalled Walker from the G League's Indiana Mad Ants on Saturday.
Walker was assigned to the G League's Indiana Mad Ants on Saturday.