After working through the request, Mozeliak said on Monday: "I think we're going to allow him to honor his friend."
This will be the second notable uniform number swap of the offseason, as manager Mike Matheny has already agreed to give up his No. 22 to new right fielder Jason Heyward, who has worn that number for years as a tribute to a high school teammate who was also killed in a car accident.
Jenifer Langosch is a reporter for MLB.com. Read her blog, By Gosh, It's Langosch, and follow her on Twitter @LangoschMLB. This story was not subject to the approval of Major League Baseball or its clubs.